Double Dragon

Jimmy and Billy are reunited after being separated at birth. Billy decides to open up a marital arts school, to teach local kids. Billy is attacked by the shadow boss, who turns out to be his brother.

Billy and Jimmy become the Double Dragons and face off against the Shadow Master at the EMF plant.

The double dragons must help the mistress of Chi break free of his control.

The Shadow Master begins distributing a drug called Oblivion so that he can turn Metro City's population into mindless zombies.

The Shadow boss attempts to alter the city's water supply.

Billy confronts Jimmy about the methods he uses to take down the bad guys.