In an action-packed drama reminiscent of '80s techno-sci-fi thrillers, Jackie Chan stars as Lin, a police inspector in modern Hong Kong. While tracking down a deranged, mech-enhanced villain, Lin discovers that a geneticist's lost biochemical invention has been surgically implanted into his missing daughter. With the help of a young hacker, Lin connects the dots between the device that haunts his daughter, his enemy's sinister army, and a strange cultural phenomenon called 'Bleeding Steel'.