Summer in Cheung Chau is a hidden wonderland. Three local Cheung Chau kids and a dog break into homes of islanders who are on vacation, and of the emigrants who left for good. Marked with whimsical adventures, their journey imparts unexpected lessons about the secrets of the adult world. As the end of summer approaches, the trio is destined to part at the cruel crossroads of youth.

A lonely man is hired to take care of the to-be-demolished Cheung Chau Cinema. He is greeted by a dog, two kids, and a mysterious granny who calls everyday. The film was shot in the ruin of Cheung Chau Cinema, locating in Cheung Chau, an island in Hong Kong. Before saying goodbye, he organises his own screening of The One-Armed Swordsman (1967) directed by Chang Cheh.