Jacky Wong Chi-Yin

Hong Kong Customs and Excise Department officers Chow Ching-lai and Cheung Wan-nam share a close mentor-student relationship. On a case involving seized smuggled arms, Ching-lai is sent to take part in a joint operation with Interpol to capture a reclusive arms dealer. However, Wan-nam makes a drastic decision that further complicates the case.

This story is a collection of four love relationships: Geeky Hong (Michael Ning) who looks forward to romance bumps into Shirley (Shirley Chan); Rich kid Silver (Chloe So) who is socially anxious hires a rental boyfriend Jerome (Adam Pak); Chung (Anson Kong) and Zoe (Karena),a dysfunctional pair of social couple; and Ho (Edward Ma) an indecisive person meeting Tin Tin (Roxanne Tong), a nurse with polyamorous relationships. Following the through line in each story, they encounter unexpected obstacles in their relationships all set on the eve of Valentine's Day.