A martial arts instructor from the police force was jailed after killing a man by accident. But when a vicious killer starts targeting the martial master who provides guidance to help the police to exchange for his freedom. Kungfu Jungle revolves around a martial officer at Hong Kong Police Academy, played by Donnie Yen. He was arrested after accidentally killing a man. Donnie Yen in behind bars not be long before an assassin recruited for him a mysterious plan.