In the overpopulated metropolis of Taipei, two men and a woman literally circle each other. Mei-mei is a lonely real-estate agent who works long hours. One day she misplaces the keys to one of her vacant apartments. The young, hesitant, and gay Hsiao-kang, who sells funeral-urn space, takes the keys and happily takes to living surreptitiously in the apartment, unaware that Mei and the footloose, cocky Ah-jung also use the flat regularly.