MOON CHILD follows a group of childhood friends as they advance in a futuristic criminal underworld. Sho feels he is doomed to walk in his idol Kei's footsteps as a vampire with the gift of eternal life and the curse of blood thirst. Over time, their tight friendship becomes corrupted because of their rivalry and love for the same woman.

In a summer holiday, a father (Mr. Kuk) with his children (Ku Fung and Little Kuk-Ku) has decided to open a noodle bar on a 2-month lease. He has great expectations for his noodle business. Kuk Fung quickly falls in love with Carlily (Kuk Fung's friend). Meanwhile, Little Kuk-ku has met a new friend, Wo who is working at the noodle bar...