In ancient China, superhero Huan (Louis Koo) falls in love with a female superhero called Red (Sandra Ng). They decide to retire and move to a small village for the sake of starting a family.
Five years passes and they now live a happy and quiet life until a martial arts competition is being held in the very village they live. They plan to leave the village for good but end up being tangled in a conspiracy to murder the champion.
To find out the identity of the mastermind, Huan and Red must don superhero costumes one more time in the name of justice.