In the 1940s, school teacher Fang Lan becomes embroiled with the resistance efforts of local guerilla group Dongjiang during the Japanese occupation of Hong Kong. Fang is recruited by one of the resistance group’s captain Blackie Lau after assisting the group with a rescue mission of novelist Mao Dun. Fang’s mother volunteers to take her place as a courier for a mission and is arrested. To save her mother, Fang finds herself turning to a childhood sweetheart, who now works at the Japanese occupation headquarters.

An absentee father and his bipolar son are forced to live together as they struggle with a recent family tragedy. The tension and anxiety boil as they live and try to cope in a tiny apartment. As time passes, they realize their shared pain is not their only source of grief, as they find the outside world is a cruel and unjust place.