"City Japes July 1987" is a classic sitcom set in a building in the Garden City. The story revolves around three families - the Xus, the Leungs, and the Sus - who live in the same building and interact with each other. Despite occasional conflicts, the families are close-knit and share heartwarming moments. The Xus are known for their helpfulness, the Leungs are a loving couple, and the Sus have three siblings with distinctive personalities. The show features many memorable characters, including coworkers and friends of the families.