Carrie jumps at the chance to a take on a fabulous new identity as Larissa, but gets more than she bargained for when Larissa's hijinks catch up with her. After a whirlwind day in Manhattan, Walt is forced to face the feelings he is desperately trying to hide. Sebastian and Maggie agree to keep a secret from Carrie. Mouse takes a page from Donna LaDonna's playbook. Meanwhile, Tom decides to take a meditation class, but finds himself surprisingly tense after a run-in with another attendee.

Carrie is happy going to her junior prom, but when hidden secrets are revealed plans begin to change. Dorrit is determined to take her relationship with Miller to the next level, but things hit a bump along the way. For the first time in her life, Mouse decides to defy her parents to date whom she wants. Tom begins to struggle with sneaking around, especially when he thinks someone might be on to him. Elsewhere, Larissa makes Carrie and Walt an enticing offer.