In 2008, during the last month of summer before high school begins, an impressionable 13-year-old Taiwanese American boy learns what his family can't teach him: how to skate, how to flirt, and how to love your mom.

Nǎi Nai (奶奶) is my grandma. Wài Pó (外婆) is also my grandma. Together, they are my grandmas. Meet my grandmas. (World Premiere)