Incredible martial arts action hero Tony Jaa stars in an amazing, stunt-packed crime thriller. Dedicated undercover cop Kit (Wu Jing) has become a drug addict to infiltrate the organ-trafficking racket of Hong Kong crime kingpin Hung Man-keung (Louis Koo). Hung himself suffers from a heart condition and plans to kidnap his own younger brother to provide a transplant. Kit decides to move against his target, but his cover is blown during a messy gunfight and he winds up in a grim Thai prison. Here, one of his guards is Chai (Tony Jaa), who’s desperate to find a bone marrow donor for his leukaemia-afflicted daughter. This standalone follow-up to the hit SPL is packed with spectacular set-piece action sequences that provide a superb showcase for the extraordinary talents of Ong-bak star Tony Jaa, who was recently seen in Fast & Furious 7. Ratcheting up the breathtaking fight scenes still further are rising martial arts stars Wu Jing and Zhang Jin.