When a fallen angel descends to the Earth on a mission to storm the underworld, a love shared between angels and humans offers telling testament to the power of a lucky ghost. In the battle that follows, both the living and the dead will discover that a war waged in hell could have consequences that resound forever.

Fang Chih Kien (Elliot Ngok) witnesses a triad murder. When he picks the killer out of a lineup, the triad gang goes out of their way to make his family's life a living hell, until he can take no more and seeks revenge.