Meg, now jobless but not broken, hunts for a new gig only to discover her rent's been jacked up; with a heavy heart and a suitcase, she heads home for the holidays; however, let's be clear, she's only home for a Christmas cameo.

Meg finds herself back at her parents' place, where her room has been taken over by the cat, Whispers; while Shirley and John, her parents, are thrilled to have their daughter back, Meg feels a bit overwhelmed by their excessive affection.

As Meg is set to say goodbye to her twenties, she's ambushed by a surprise party; amid wild inquiries about her job, real estate plans, and a blast from her cringe-worthy past, the evening spirals.

Meg decides to uplift her spirits by joining a spin class after a disappointing birthday bash; Meg meets the intimidating yet persuasive instructor, Jessika, and runs into Carla, who invites Meg to her New Year's Eve party.

Meg somehow lands at Carla's afternoon New Year's shindig and to her surprise, it's a reunion of high school who's who; this leaves Meg in a hilariously awkward situation with an audience of her high school past.

Convinced she has a concussion from the party, Meg visits her childhood doctor, Dr. Taylor; Meg ends up sharing her worries and feelings of inadequacy, leading Dr. Taylor to suggest that anxiety might be the root of her problems.