A suspected criminal mastermind escapes from police custody, throwing the city into turmoil. With the police department now divided, rival police chiefs are forced to take their fight to the streets of Hong Kong with deadly consequences.
Water Ng, a typical loser who likes to gamble and takes no responsibility is asked to take care of his ex-girlfriend Jik’s son, Yeung. With Jik tells him that Yeung is his son, and promised 100 thousand dollars, Water Ng agrees to be a father for one month. Soon he notices his son has Autism. He gets to understand the difficulties of raising a child along with special needs. With Jik's absence on the agreed date, Water Ng realizes why she brought him his blood. He finds his life goal while discovering Yeung’s talent on the racing field, then decides to get rid of the dissipated life and accompany his son spreading wings for the dream.