Plot

When three overworked and under-appreciated moms are pushed beyond their limits, they ditch their conventional responsibilities for a jolt of long overdue freedom, fun and comedic self-indulgence.

Amy has a seemingly perfect life - a great marriage, over-achieving kids, a beautiful home and a career. However, she's overworked, over-committed and exhausted to the point that she's about to snap. Fed up, she joins forces with two other over-stressed moms on a quest to liberate themselves from conventional responsibilities - going on a wild, un-mom-like binge of long overdue freedom, fun and self-indulgence - putting them on a collision course with PTA Queen Bee Gwendolyn and her clique of devoted perfect moms.—STX Entertainment.com

Amy is a hard-working mom. Between caring for her two children, shuttling them to activities and having to pick up the slack for her lazy husband, she works at a company filled with millennials who have no work ethic or clue about her life. Even more unproductive is all the nonsense she has to endure just to be a "good mom". In particular, PTA meetings and other PTA functions. This leaves her no time for relaxation or just to be herself. One day she rebels against the system and decides to let go, ditching all the unnecessary bs in her life. This gains her some friends among the other moms - two in particular, Carla and Kiki - but pits her against the President of the PTA, Gwendolyn James, who is a nasty piece of work.—grantss

With her most important job being a mother, the underpaid and overworked Chicago coffee company representative, Amy Mitchell, is struggling to juggle work, parenting, a strained relationship with her husband, and two kids. On the go and always in a rush, the suburban mum will eventually snap at president Gwendolyn's PTA meeting, taking the decision of rebelling against an unfair system and the distressing expectations of a near-perfect motherhood. As a result, two new friends will become indispensable in Amy's life--the stressed-out moms, Kiki and Carla--who have also decided to embrace being "bad" moms and live a little, far away from rules and obligations. But with the diva Gwendolyn watching them like a hawk, will the girls make a stand against all forms of oppression?—Nick Riganas

Amy Mitchell (Mila Kunis) is a married woman in the Chicago suburbs with two children, Jane (Oona Laurence) and Dylan (Emjay Anthony), who feels overworked and over-committed. She works as a sales rep for a "hip" coffee company, prepares healthful, hand-packed lunches for her children, does most of their homework, goes to all of their extracurricular activities, and is active in her school's PTA, run by the domineering Gwendolyn James (Christina Applegate) and her cronies, Stacy (Jada Pinkett Smith) and Vicky (Annie Mumolo). When she catches her husband Mike (David Walton) cheating on her with a cam-girl, Amy kicks him out and attempts to keep everything together..

Amy Mitchell (Mila Kunis) is a married woman with two children, Jane (Oona Laurence) and Dylan (Emjay Anthony), who feels overworked and over-committed. She works as a sales rep for a "hip" coffee company, prepares healthful, hand-packed lunches for her children, does much of their homework, goes to all of their extracurricular activities, and is active in her school's PTA, run by the domineering Gwendolyn James (Christina Applegate) and her cronies, Stacy (Jada Pinkett Smith) and Vicky (Annie Mumolo). When she catches her husband Mike (David Walton) cheating on her with a nude hooker via the internet, Amy throws him out and attempts to keep everything together.

After a particularly stressful day, Amy publicly quits the PTA in response to Gwendolyn's overzealous bake sale plans. At a nearby bar, Amy meets Carla (Kathryn Hahn), a laid back, sexually-active single mom, and Kiki (Kristen Bell), a stay-at-home mom of four who admires Amy's dissent from Gwendolyn. Amy and Carla are irritated to discover that Kiki's husband is domineering and expects her to take care of all the kids and the house with no assistance whatsoever, while Amy and Kiki are disturbed at Carla's very hands-off approach to parenting. The trio embark on an all-night bender that inspires Amy to loosen up with her kids: she takes them for rides in Mike's classic car, gets them lunch from Arby's, forces Dylan to fend for himself to prevent him from being lazy and entitled, and takes the overachieving and constantly stressed Jane for a spa day.

After Amy brings store-bought doughnut holes to the bake sale, she draws the ire of Gwendolyn, who uses her PTA authority to get Jane terminated from the soccer team. Amy is angered, and decides to run for PTA president in opposition to Gwendolyn. A meet-and-greet at Amy's home draws only one visitor, who informs them that Gwendolyn has launched a rival party at her own house, catered by Martha Stewart. In spite of this, the other moms, and Martha, swiftly abandon Gwendolyn's party when it becomes clear that she intends to lecture them all evening, leading to a successful booze-soaked house party at Amy's.

Gwendolyn responds by planting drugs in Jane's locker, framing her, getting her kicked out of all extracurricular activities on the same day that Amy gets fired. Jane and Dylan both go to stay with Mike (who has agreed to an amicable divorce) in response to what they see as Amy's failure as a mom. At the worst possible moment, Amy loses her job because her younger, "hip" boss refuses to understand her reasons for taking time off.

A despondent Amy stays home during the PTA election, but is roused to action by Carla and by Kiki, who finally stands up to her husband and orders him to deal with everything alone until the meeting is over. At the event, Amy gives an inspiring speech about how all the moms are overworked, and that they need to take time off, do fewer and less stressful events, and most importantly, allow themselves to make mistakes. Amy wins by a landslide, and eventually winds up comforting a devastated Gwendolyn, who reveals being in charge of the PTA was her only way to take out her anger at her husband's arrest for embezzling from a charity.

Some weeks later, Amy's approach has led to positive changes: Jane is stressing out less, Dylan is actually applying himself, Kiki now makes her husband help out with taking care of their kids, Carla is now more responsible and hands-on, and all of the other moms, including Stacy and Vicky, are feeling more energized. Amy herself has gotten her job back with much better compensation after her boss sees how much he had taken her for granted, and continues to see Jessie (Jay Hernandez), a handsome and popular widower she bonded with some weeks earlier. Gwendolyn has admitted that Amy's way has merit, and as the film closes, invites Amy, Carla and Kiki for a day of fun on her husband's private jet.

The ending credits play over the cast interviewing their real-life moms.