Tin Yen (Endy Chow) was born with a superpower of foreseeing one second ahead, but it didn’t bring him any luck so far. Now a middle age man, he is still a loser who needs to take care of a young son (Hung Cheuk Lok) with partial hearing loss and has no respect of his superpower.
One day, a boxing-holic, Shun (Chiu Sin Hang), witnesses how Tin Yen defeated a loan shark gang by himself. He is determined to hire Tin Yen as his training assistant to beat the local boxing champion Joe (Chanon Santinatornkul). During the preliminary round, Shun has to withdraw from the match due to asthma attack. Tin Yen has no choice but to stand-in for Shun. Out of expectation, Tin Yen wins with his one-second power.
Tin Yen realizes in order to gain back his son’s respect, he has to get himself together. Thus, he agrees to be properly trained by Shun. Suddenly, Tin Yen has turned into this new sensation “One Second Champion” who is on his way to the finals. However, due to an accident, Tin Yen loses his superpower. Will he be able to beat the killer champion Joe on his own and will Tin Yen be able to win his son’s respect in the end?