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Martini Mondays and tequila Tuesdays take a back seat to new step-motherhood when former party girl Stephanie marries Charlie, an older dad with three kids. Becoming an instant mom doesn't come with a rulebook, but it does come with a dose of humor as Stephanie traverses the fine line between being a friend and being a responsible parent.
After facing her fear of swimming, Stephanie forces the rest of the family to face their fears as well.
Aaron learns that Maggie has a secret career as a romance novelist, but when she denies it, the family tries to get her to reveal her secret identity.
When Stephanie tries to teach James and Aaron about selfless generosity, the whole family starts helping Mr. Ebnetter for the wrong reasons.
Stephanie and Charlie stop punishing Gabby and James for fighting, in hopes that they will work things out by themselves.
With Gabby and the parents arguing, a smug Maggie takes Gabby for the weekend to straighten her out. When Gabby and Maggie get along surprisingly well, Stephanie must show Gabby the “real” Maggie she grew up with.
When a ticket means that Stephanie must ride with Gabby for her to drive, Stephanie begins to get too comfortable with Gabby's friends.
After Stephanie helps Aaron beat James at a game, Charlie worries that she has upset the balance of power in the family. Gabby gets caught in the middle of a fight between Stephanie and Maggie.
Maggie bribes James and Aaron to pretend to be her younger brothers; Gabby is punished for having Noah over.
After being humiliated by a girl at school, James runs against her in an election; Charlie asks Gabby to help him replace a lost wedding wing.
Gabby loans Stephanie's purse to a popular girl, but when it gets ruined, Gabby must scramble to replace it.
James gets a "get out of jail free" card from Stephanie and Charlie and the kids exchange the card among themselves.
The Phillips get a visit from their cousin, but Charlie worries he'll be a bad influence on James. Also, Aaron and Maggie help Gabby prepare for a date.
Stephanie asks Aaron to befriend a client's son, not realizing Aaron is terrified of him; Gabby saves Maggie's life.
Gabby uses a childhood friend to make Noah jealous; Stephanie tries to correct Aaron when he accidentally calls her "Mom."
Stephanie helps James lead a student rebellion when the principal cracks down on the dress code; Gabby teaches Charlie how to use social media.
Stephanie needs to get Gabby's help to stay on top of Aaron's homework so that she will not disappoint him.
The night before Gabby takes the SATs, a secret about Stephanie is exposed; James and Aaron have a hard time sharing a room.
James tries to trick Stephanie and Charlie into thinking one of his friends is actually a foreign exchange student.
James and Gabby try to make a business out of selling Grandma Maggie's fruit snacks, but when she finds out, she wants a piece of the action.
After Aaron is brought home by the police, family services must determine whether Stephanie and Charlie are doing a good enough job as parents.
