Frank and Danielle Minyon are a young, beautiful couple. Frank works full-time as a medical software engineer and Danielle is a homemaker. They have two children, Frank, 7, and unruly Skyler, 3, who rules the roost with massive tantrums that ensure she always gets her way. Danielle had to quit her job to take care of Skyler when daycare refused to take her back. Danielle's grandma, Gigi, also lives with them, but she's taken to hiding in her room to avoid her great-granddaughter's screaming. Mom struggles to get the children up in the morning, by 8:00 a.m., Danielle's drained but has to spend the rest of her day chasing Skyler. By the time Dad gets home, an exhausted Danielle needs help, but Dad refuses to discipline his "little princess" when she acts out, and is harsh with his sensitive son.

Arthur and Cathy Webb are a dual-career couple who are juggling the demands of work, children and, most of all, sleep. They have three children - Josef, 6, Paige, 5 -- who has Down Syndrome -- and Madison, 2-1/2. With Dad away all week for his job as a management consultant, Mom is left to handle the three children alone. She has no structure to the evenings, rarely eats with the kids, and finds each night draining. Mom feels so guilty about leaving daughter Madison with a babysitter during the day that she allows the toddler to cling to her constantly. She cooks and cleans with one hand, holding Madison the entire time. Because of Paige's Down Syndrome, Josef refuses to play with her and calls her names. Bedtime is a joke. Often, Mom falls asleep before the kids, around midnight, and the kids all sleep in Mom's bed. Dad spends the entire weekend either sleeping or running nonstop errands, considering the latter his "family time." Mom is at her wits' end and wants Supernanny's help.

Cheryl McMillion is struggling to raise her three children on her own, while her husband, Jonathan, a National Guardsman, is serving his tour of duty in Afghanistan. However, while Dad is overseas, there's a battle to keep the peace on the homefront, as the boys -- Ryan, nine, Hunter, seven, and Garrett, three -- act out by fighting and yelling. Mom's had it with the aggression in her family, and turns to Supernanny for help.

Jo Frost visits Judy and Ed Larmer to address the destructive, out-of-control behavior of their four children -- John (4), twins Jessica (2 1/2) and Justin (2 1/2), and Joey (11 months). However, it isn't long before Jo realizes that it's the parents' constant fighting and bickering with each other that is the source of the family unrest.

American viewers are treated to Jo Frost's trials with a British family, Paul and Denise Cooke and their daughters, Meghann (9), Gabriella (6) and Erin (4). The girls are bright and creative, but arguments with their parents regularly turn into shouting matches. Meghann in particular bosses her family around, terrorizes her sisters and can erupt at the drop of a hat. Her relationship with Denise is very stressful, and the family rarely ventures out in public together for fear of an embarrassing scene.

Michael and Lorraine Amaral own a restaurant and work seven days a week, leaving them no time for their three "rough and tumble" boys: Ryan, 9, Logan, 4, and Kade, 2. Mom's at her breaking point, trying to juggle work and family while the kids run amok in the restaurant like it's their own personal playground. It's driving everyone crazy, especially the employees -- who are also expected to babysit! Can Supernanny put this family back on track and help them find some balance between work and home?

Deirdre and Trae Facente don't know how to integrate their autistic son, Tristin, into their daily life with their twins, Kayla and Marlana (4). Tristin is completely non-verbal, caught up in his own world of spinning, jumping, swinging and, often, taking off his clothes. The parents are at a loss as to how to help Tristin come out of his zone and join the family. Supernanny teams with world-renowned autism expert Dr. Lynn Koegel to teach all the Facentes inclusion and communication techniques to help engage Tristin.

Tami and Shaun Keilen are living the American dream. This former Navy SEAL and his beautiful wife have a successful family business and four gorgeous children. However, this dream becomes a nightmare when the parents return home from work, as four-year-old twin terrors Maile and Malia run roughshod over Shaun and Tami. Well-behaved big sister Haeley (six) and docile baby brother Leighton (one) are lost in the shuffle, as the twins habitually take three entire hours to get dressed, screaming all the while. Tami devotes much of her home time to compulsively housekeeping, and Shaun, who can face any military challenge, can't hold his ground to the demanding twins.

Jo Frost returns to Britain to help kickboxing couple Stuart Lambert and Laura Bradbury with their three children: Matthew, 5, Tegan-Olivia, 2, and baby Diesel, 5 months. Matthew's aggressive outbursts leave Laura battered and bruised; he even gives her a bloody lip when he punches her in the mouth! As the stepfather, Stuart is desperate to discipline the karate kid, but Laura won't allow it; instead, the family is split down the middle with Stuart taking responsibility for his daughter and Mom fighting to control Matthew.

When Elizabeth and Bob Tsironis' twin boys, Teddy and Nicholas, were born, they only weighed a pound each. They beat the odds to become healthy, strong, three-year-olds, but their parents are so grateful that their miracle twins survived, they completely spoil the rambunctious toddlers. Nicholas even has a broken leg from Teddy pushing him off the bed! Meantime, big sister Kate, four, is sometimes overshadowed by her brothers' pandemonium. She copes by compulsively lying about painful foot cramps to get attention -- everything stops in the household when she is "stricken." She also manages to have the twins get blamed for her own misbehavior, but her parents have no idea they are being duped.

Cheryl Carsley is a harried single mom with five children, including two sets of twin boys. She's in school full-time, training to be a teacher, but at home her kids -- Chantal, 7, Nicolas and Caleb, 5, and Bobby and Elijah, 4 -- rule the roost. The house looks like it hasn't been cleaned in years, but worse than that is the way the kids treat their Mom and each other. A bitter divorce has left the children emotionally scarred; they hit their mother, scream at her, fight with each other and throw fits. The kids don't listen or treat Cheryl with respect, and every technique she has tried has failed. On top of this, how can a single working mom find one-on-one time with each child?

Cathy and Steve Schwartz both work full-time and Catherine's sister, Donna, who lives just a block away and raised Cathy after their mom's death, is the main caregiver for their four rambunctious Schwartz children. There's baby Emily, 1, Katelyn, 3, Amanda, 4, and Samantha, 6. From morning to night, no one wants to discipline the children, and any attempts made by the parents are thwarted by Donna, whose refrain is, "They're just kids." Mornings are a study in chaos, as Mom plays short-order cook to the girls, racing to get to the older ones on the school bus and herself to work on time. Plus, though she's 3-1/2, Katelyn still isn't potty-trained. Dad says that keeping the girls in line is harder than his job as a city cop, and Cathy despairs that the girls consider Donna more their mom than herself.

The Silvas are a "Yours, Mine and Ours" family spiraling out of control. Tom and Danielle each have two children from previous marriages, and they have three children together -- the age range is six months (Caden) to 17 years (Meghan). Tom works all week away from the family in the Army National Guard, and soon he'll be deployed to Iraq for a year and a half. In his absence, Danielle, who is very disorganized, allows the children to run amuck. The kids curse openly with no consequences, and there's a lot of negative talk from the parents, which has trickled down to the kids as well. Dad and Meghan's relationship needs repair before he leaves for the war, and Jo senses that Danielle is presenting a false "June Cleaver" persona.

Sherman and Joelle Young work opposite shifts at their jobs, with Dad watching the kids during the day while Mom works, and then handing them off to Mom before going to work at 4:30 p.m. They barely see each other six days a week. Well-behaved oldest child Dylan, 13, is often pressed into service as a babysitter or overshadowed by his siblings, Shermie, 5, and Shelby, 3, who are literally climbing the walls. Shermie is rambunctious, disrespectful, aggressive and hits his mother. During timeout, he'll run all the way out the door and up a tree, and Shelby is no better. She's apt to pull every book off the house's shelves when angered, eats dinner in front of the TV instead of with the family, and both tykes refuse to stay out of Dylan's room. Joelle copes by yelling a lot, which the kids ignore, and Dad has no idea how to engage with his children.

Erin and Jacob Harmony are at their wits' end raising three boys -- Jake (11), Ian (5) and Grant (3). Big brother Jake is not the big problem, but his two little brothers are. Ian is the master of back-talk. He torments Grant into frenzies, and the two have violent battles. Grant's temper gets so out of control that he bites furniture until he bleeds from the mouth. He has major separation anxiety, and has been known to follow Erin's car all the way to the highway when she tries to leave the house. On top of it all, Grant wakes up at 3:00 a.m. every morning and insists on sleeping with Mom. Dad gets so fed up with the crowded conditions that he moves himself onto the living room sofa! With discipline attempts going nowhere and no one getting any sleep, this family needs Supernanny now. Can Jo restore harmony to this household?

Tim Wujcik and his wife, Toni, seem to have it all -- he's a great provider, Toni's the hard-working stay-at-home mom, and they have three beautiful children. But they need what money can't buy -- mutual respect among all family members and a tranquil home life. Instead, the older boys -- Alec, 6 and Bryce, 4 -- are wantonly destructive with their many toys, and aggressively defy Mom's efforts at discipline. Baby Carly, 1, is learning all the wrong lessons from her older siblings, and Toni swings between being too timid with her kids and too harsh when she's had enough. Tim admits that he's the fourth child in the family -- undercutting Toni's efforts at discipline and instigating trouble with the kids. His preferred method of discipline is to "reason" with the children with lots of talking, but it isn't working. Dad needs to grow up fast and Jo Frost is on the scene to help.

Lisa and Terry Jackson have five-year-old triplets, Will, Ethan and Isabella. Lisa, a stay-at-home mom, is outnumbered and burned out by her boisterous, ill-behaved children, especially her strong-willed daughter. Isabella is so out of control, she even jimmies her brother�s locked door with a coat hanger! Dad, Terry, is checked out, with a job that takes him 250 miles away from home six days out of seven. Can Supernanny fix this fragmented family of five?

Vicki and Aaron Newton are separated, with joint custody of their two sons, Aaron (12) and Kobe (5). Though the boys are angels for Dad, young Kobe saves his worst behavior for Mom. He is violent and destructive -- hitting, kicking, slapping, punching and swearing. He even throws rocks at Jo's head. Aaron isn't physically aggressive, but he does talk back to his mother. For the first time, Jo Frost observes life in two homes to hone her recommendations for each parent. But can she get them to collaborate on their child-rearing techniques?

The Uva boys, Trevor (7) and Travis (4), disrespect authority figures, curse, insult and bully their classmates. They expect their parents to do everything for them -- in fact the seven-year-old insists his mom help him go to the potty. Mom Rosemary owns and operates a pre-school full time, and is too tired by day's end to give her boys the attention and love they desperately need. She craves more help from her husband, John, a stay-at-home dad who is admittedly clueless and detached from his sons. He brings them to Rosemary's pre-school every day because he doesn't know what else to do with them. The boys have gained a reputation for being the worst behaved kids there, and their parents have essentially given up. Jo enters the equation with a master plan for this family to wake up to the reality of their situation. Her ultimate goal is to boost John's pride in his role as stay-at-home dad, teach both parents to step up their discipline measures, and help the family bond and become happier.