The Duncan family are adjusting to the surprise birth of their fourth child, Charlie. When parents Amy and Bob return to work they put their latest addition in the care of her three older siblings.
Cast:Bridgit Mendler , Leigh-Allyn Baker , Bradley Steven Perry , Mia Talerico , Eric Allan Kramer , Jason Dolley , Raven Goodwin , Shane Harper , Micah Williams , Patricia Belcher , Logan Moreau , Luke Baird , Ellia English , Samantha Boscarino , Ericka Kreutz , Kevin Covais , Kalia Fullerton , William Allen Young
Amy goes back to work for the first time since having Charlie, leaving Bob home with the kids. Teddy invites Spencer over for a study date since all the kids are supposed to be home helping Bob with Charlie while PJ and Emmett try rehearsing. Unfortunately, Bob falls down the stairs, leaving Teddy to look after Charlie and Gabe while PJ takes Bob to the hospital.
Charlie's parents go on a date while her older brothers and sister watch her.
PJ starts to suspect that their neighbor Mrs. Dabney has murdered her husband. He enlists Gabe to help investigate. Amy and Teddy learn to cross generational borders.
Teddy becomes the school mascot. Charlie takes her first step.
Teddy and Ivy go on a double date. Gabe tries to get out of homework.
Teddy, Gabe and Charlie are stopped by a store-owner for shoplifting. Charlie did it! The police arrive only hours later, and Teddy is in a hurry to a party. PJ desperately tries to come up with a jingle for Bob's TV commercial.
Bob comes home bearing gifts - smart-phones for Teddy and PJ, who will both learn about butt dialing the hard way, a surprisingly hazardous RC helicopter for Gabe, and an irritatingly "happy-happy-happy" singing plush horse for Charlie.
On Charlie's first birthday, the family remembers the day Charlie was born, and how hard it was for everybody to make it to the hospital; for starters, Amy's doctor had taken the day off from work to host a birthday party for his son; Teddy offers to entertain the children at the party if the doctor goes to the hospital to supervise the birth; P.J. and his father, Bob, are on a fishing trip when a bear invades their car and they hitch a ride to the hospital with two people who drive motorcycles. To top it all off, Gabe was accidentally left home alone and has to be taken to the hospital by their reluctant neighbor, Mrs. Dabney.
Teddy and PJ try to prevent their old tree house from being torn down.
Teddy meets her father's estranged Uncle Mel.
When PJ meets a cute girl, Madison, at his new job at Kwikki Chiki, Emmett becomes jealous that they're spending all their time together. Coincidentally, Amy learns that Bob used to date Madison's mom Katherine. Teddy tries to help Gabe with his classmate Jo who is picking on him.
Teddy agrees to watch their mean neighbor's beloved cat, Kaboodle, and Gabe experiences his first crush; Gabe lies about his family to make it seem like he and his crush, Kit, have a lot in common. He tells her that he is an only child living with his mom after his parents' divorce, which is exactly what Kit tells Gabe. Later on, Kit visits Gabe's house and Gabe, with the help of Teddy and older brother P.J., tries to keep it a secret that his parents are together and he has three siblings. Meanwhile, Kaboodle is checked by a cat therapist, who tells Teddy to readjust Kaboodle's aura.
Teddy is disappointed when she gets a B in English. She becomes obsessed with getting the teacher to like her. Amy offers to coach Gabe's basketball teams when Bob can't. Will she be any better than Bob?
Amy and Bob are having their wedding anniversary. Teddy wants to surprise them. Charlie's blankie goes missing and she won't stop crying, Teddy offers to look for the blankie while Gabe takes the parents to the movies. PJ gets the cake.
PJ makes a web video of Charlie that turns her into an internet sensation.
Spencer agrees to do a dance routine with Teddy for the school talent show.
Teddy wants a phone, but Bob won't pay for it. The Kwikki Chikki needs to increase sales and PJ gets the idea of giving the business a 'face'. Amy gets competitive at Charlie's music school.
With Amy and Bob unavailable, it's up to Teddy to trick PJ into the dentist's office. This, however, leaves only Gabe to look after Charlie. Surely he is up to it while simultaneously doing a school project with his arch enemy Jo, right?
When Gabe persuades Amy to let him invite his friends for a sleepover, this unfortunately means that Teddy loses her privacy in the cellar and has to sleep in Charlie's room. The night before an important audition. No problemo, right?
PJ wants money to buy a car, but Bob refuses to help. Gabe has the money but he makes PJ sign a loan contract. Teddy pays a surprise visit to Spencer's workplace and sees his arm around another girl. Is it what it seems?
Teddy is having a hard time recovering from her breakup with Spencer.
Amy wants Gabe to befriend the new kid on the block, PJ and Emmett want a bass player in their band, and since Spencer already has a new girlfriend, Teddy wants a rebound boyfriend. Also, Bob resumes his old passion hobby.
The Duncans take a family vacation at the ski resort where Bob and Amy got married. Teddy encounters a psychic who predicts she'll meet the love of her life. The boys meet an old "friend". PJ chooses a wrong trail - or does he?
Still on their family ski trip, Teddy asks Ivy to come meet her.
It's Teddy's 16th birthday and she needs driving lessons, but Bob won't teach her. When Mrs. Dabney gives Teddy a chance, she takes it. Meanwhile, a dog has followed Gabe home, and though Amy initially wants it gone, she starts to like it.