Larissa returns from her summer in Kyoto and insists on taking Carrie and Walt to a fabulous Japanese festival in the city, where Larissa meets Samantha, with an explosive result. Samantha seduces an acrobatic Ninja. Back in Castlebury, Carrie's plans to remain Zen backfire when she finds herself locked in a classroom alone with Sebastian. Mouse helps Maggie with her college applications, but Maggie is distracted when somebody from her past reappears. Meanwhile, Walt worries that his classmates will sense he is gay, and Harlan makes an offer Tom can't refuse.

Carrie spends an exciting day in the city with playwright Adam Weaver. Samantha, who booked a new job as a nude art model, takes matters into her own hands when she sees a student's painting she doesn't like. When Sebastian's mother announces she is marrying her tennis instructor boyfriend, he finds support in surprising places. Elsewhere, Dorrit's boyfriend's attempts to get closer to her backfire.