David and Barbara Jeans waited 16 years into their marriage to have kids, and their three girls don't show any mercy on the middle-aged pair. Andra, who is 4 1/2 years old, dominates the family with her selfish demands, tantrums, and violent outbursts. The combination of Andra and the three-year-old twin girls makes for a turbulent and chaotic existence. David's job as a salesman takes him out of town for five days out of every month and Barbara is left to fend for herself alone with the three terrors. She is at her wit's end and is starting to doubt her ability as a mother, and is feeling emotionally and physically drained. The Jeans family needs an answer to their problems fast.

Bryce and Jen Bullard are a Colorado couple who are struggling to manage a busy plumbing business and raise two unruly children. The Bullard household is chaotic, with work phones ringing off the hook and kids screaming late into the night. The Bullard boys, two-year-old Rylan and six-year-old Brycie, have full rein of the house. Jen and Bryce have very different views of parenting; Jen is more lenient, while Dad is quick to punish. In order for Bryce and Jen to gain control of their household, they must learn get on the same page with their discipline and follow the Supernanny method.

Parents Shawn and Tammy Orm have lost control of their three sons. Eight-year-old Chandler talks back to his parents, six-year-old Caden has a nasty habit of beating up his younger brother, and three-year-old Declan is quickly learning to emulate his older brothers' bad behavior. Stay-at-home mom Tammy is a softie and refuses to discipline her boys. Video technician Shawn takes a tougher approach, often yelling at his sons, but that doesn't curb their naughtiness either.

John and Melora Wischmeyer are a hard-working couple with three children. John works long hours as a civil engineer, and Melora took a marketing job where she could work at home to enjoy time with her children. However, the time spent is anything but enjoyable. Their four-year-old twin daughters, Alaia and Ashlyn, do everything in their power to control their parents. During the day, Alaia hits, screams and is downright defiant. Any discipline Melora tries to dish out, Alaia simply ignores. When nighttime arrives, it's Ashlyn's turn to act up. She adamantly resists bedtime and repeatedly runs out of her room, throwing things and having wild tantrums. Complicating the issue is nine-year-old son Jared, a quiet, smart boy who often is punished for his sisters' misbehavior and is becoming increasingly frustrated by this situation.

Insurance salesman Fred Weston and his wife, Andrea, a homemaker and schoolteacher, are a loving, hardworking family with a big problem - a ferocious four-year-old named Andrew. Little Andrew rules the Weston house, and it's a reign of terror. He topples lawn furniture, calls his mother "Poo-poo" and bullies his eleven-month-old brother, Sean, in countless ways. Well-intentioned Fred and Andrea find themselves at their limit. They acknowledge that their tactics have been futile, but how to break the cycle and regain control?

Bill and Stacie Bailey have demanding jobs and an even more demanding family. Bill is a police officer, and Stacie teaches at the local elementary school. But when they return from long days on the job, the real work begins - raising Billy and Jadyn, ages two and six. "Billy can be very sweet - then there's the devil," says Stacie referring to her son's epic tantrums. Daughter Jadyn, according to Stacie, is "already hitting the moodiness of puberty," plus the youngster has a major sleeping problem. She sleeps everywhere but her own bed, preferring her parents' room or even the hallway floor! Will Bill be able to police his children's behavior? How can educator Stacie teach her children respect and discipline?

Robert and Evelina Gorbea have lost control of their family, and the power is in the hands of their two-year-old son, Adam. The toddler constantly latches onto his mother and explodes into ear-busting tantrums when he's denied her attention. He also refuses to go to sleep in his crib, often keeping Evelina up until the wee hours of the night. This monopoly of mom's time leaves Adam's siblings, daughter Meya (8) and son Demetrius (9), feeling neglected. Is Robert not helpful enough or is Evelina afraid to let her last baby grow up?

Scott and Jennifer Ririe have their hands full with their four children -- daughter Selia (9) and sons Hallden (7), Blake (3), and Broden(1). Scott and Jennifer have two completely different outlooks on how their children should be parented. By far their most troublesome child is the reckless and defiant Blake. Every time Jennifer looks away, he makes a beeline for the front to play with a neighbor friend. In public, he refuses to stay with her and runs off constantly; and when she chases after him, she leaves her other children unattended. While Jennifer is fearful for Blake's safety, Scott doesn't have a problem with this situation, often laughing it off. The parents also disagree about their children's eating habits.

Jason and Karen Collins live in Northamptonshire, U.K. with their four unruly children who run the house by mob rule. Ten-year-old Ben, Lauren (nine), Joshua (six) and Joseph (four) keep their stay-at-home mom on her toes all day. Dad Jason is the manager of a British bakery and often doesn't return home from work until 8:00 p.m. or later. Ben and Joseph, the oldest and youngest, are not only aggressive and destructive, but decide to be the first children ever to prove that Supernanny's techniques won't work.

The Burnetts are in over their heads. With five kids, including Zachary (8) and two sets of twins -- Joseph and John (3) and Michael and Molly (16 months) -- this is a family consumed by chaos. A self-employed, stay-at-home dad, Michael, is struggling to find a balance between work and family. Mom Joanne is a schoolteacher who comes home every afternoon to four needy toddlers who want all of her attention and a household full of chores that Dad has deemed "woman's work."

Homemaker Colleen Christiansen and her husband Chris, who works in insurance sales, have boys gone wild. Seven-year-old Corey and three-year-old Chase challenge their parents regularly with behavior that includes kicking, pinching, biting, backtalk and general disrespect. The boys can be destructive to the home, and the whole family has a tendency to shout. In addition, young Chase still uses a baby bottle.