Your name is Billy Lee. Your twin brother is Jimmy Lee. On the streets they call you the Spike, and your brother, the Hammer. That's because you are both masters without equal in the ancient martial arts of Kenpo and Kung fu. You've got what it takes to survive in the meanest streets in the world! And now, you've got troubles.

The Black Warriors, the meanest of the street gangs, is out for revenge: They want you dead. To bring you out into their territory, they've kidnapped your sweetheart, the beautiful Mary Ann.