New couple Carrie and Sebastian can't seem to catch a break. Between being grounded and rival Donna's sneaky attempts to break them apart, Carrie worries Sebastian will lose interest in her. Desperate for some alone time with him, Carrie must lie to her father and bail on plans with her sister, Doritt. Maggie's obsession with having sex drives a wedge between her and Walt. Meanwhile, Larissa wants to do a photo shoot with Carrie's purse for Interview magazine, forcing Carrie to scramble to make it work.