Getting along with some colleagues can be rough, but working with your mom? That's a whole other story. When Katie, an up-and-coming news producer, finds out her overbearing mom has rejoined the workforce as an intern at Katie's TV station, it might just be the worst news ever. But, with her biggest cheerleader at her side, Katie might finally get the recognition she deserves!
The Breakdown gets a new boss, Diana St. Tropez, a tough business lady with big plans to bring their outdated news program into the 21st century. Katie is thrilled since this is exactly the kind of strong, professional female role model she hoped for, but Carol is immediately wary of this new influence in Katie's life. Meanwhile, Chuck has trouble adapting to Diana's idea for a new panel segment of screaming pundits.
Diana sets Katie off on a mission to take the job at the station that she wants, but when Katie tries to be executive producer for the day, she soon realizes that Greg has it much harder than she realized. Meanwhile, Carol uses Greg and Katie's workplace competition as an opportunity to push the two of them together. After Diana insults Portia on a women-in-business panel, Portia declares a "squad feud" that forces their two very different worlds together.
Diana has been promoted again, this time to the head of the corporation that owns MMN, but before she leaves she finds herself embroiled in a sexual harassment scandal. This leaves Katie unsure who to believe - her mentor or her friends in the office. Carol becomes head intern and struggles to prove to the other interns, and herself, that she deserves the job.
For the first time in years, "The Breakdown" has been nominated for an American Journalism Award. Katie is looking forward to spending the night as a peer with the very reporters she has admired her whole life. Fearing her mother will ruin it, Katie tries to stop Carol from attending but is unsuccessful when Carol secures a position as a seat-filler. Katie is stuck babysitting her mom all night but gets distracted by Jeremy, a handsome New York Times reporter who looks down on cable news. Chuck is excited to reunite with all of his old anchormen friends, especially Len Archer.
Katie realizes that while she has been working her way up at MMN, her friends, including Jessica, have been getting married, having kids, and buying houses in New Jersey. Feeling pressure to impress them on Instagram with the hip New York City lifestyle that she has chosen instead, she lucks into going to a very cool Halloween party with Portia. Meanwhile, Chuck has been asked to use a new smart screen on the show, and in an attempt to get out of this seemingly impossible task, tries to convince Carol that it is possessed.
Jeremy invites Katie to do some "real reporting" and go on a stakeout with him. Carol is suspicious and kidnaps Greg to stake out the stakeout. The two discover that it may not be all business between Jeremy and Katie. Chuck meets Carvell, who is Portia's fiancé, and the two of them form an unlikely friendship.