Bo, a police detective whose life falls apart after being dumped by her boyfriend, is sent to a model agency to investigate a murder case as an undercover.

Faced with the task of creating a film about first love for his producer Wong Kar-wai, Kot ruminates on his creative process, his rejected ideas, and finally his two chosen tales, about a sleepwalker guided through the night by a lonely admirer, and a married convenience store owner faced with the vengeful first love that he once rejected.