In Taiwan, the Mid-Autumn Festival is a time for prioritizing family. When 25-year-old Jing-nan's gangster uncle, Big Eye, asks a favour, Jing-nan can't exactly say no. The favour is this: Big Eye's 16-year-old daughter, Mei-ling, has a biker boyfriend from the wrong side of the tracks and Big Eye wants Jing-nan to bring her to Taipei, away from the bad influences. It doesn't take Jing-nan long to discover Mei-ling is even more trouble than the average bratty, rebellious teenager. And she's also hiding a secret. If Jing-nan wants to save his cousin, he must figure out the truth...