'Tiger' Chen Lin-Hu works as a lowly courier, but after work, he is a young martial arts star. Donaka Mark is evading the police in Hong Kong while running an underground fight club where cold hard cash is made by defeating one's opponent in a no-holds-barred fight. Donaka tries to lure Tiger with the promise of easy money. Entrance into this world brings out the darkest side of Chen Lin-Hu, but he needs the cash. His skill saves him in the ring but can he fight and maintain his integrity?