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.

聚焦导演王湘圣83岁的外婆跟94岁的奶奶，性格迥异、热爱生活的两个老人一起过着普通而快乐的日子。