Previous Story:
Zack's muscular strength and unique kick-boxing style grabs the attention of those who witness his fighting. He is a self-taught genius of Thai Boxing. He entered the "DOA2 World Tournament" to satisfy his hunger for public attention and to win prize money. Because of his frank and funky personality, his popularity is growing. He is also fond of Tina.

DOA3 Story:
One day, after using up all his prize money from the last tournament, Zack suddenly realises he has a problem. He has forgotten to do what he always wanted to do – to enjoy the many luxuries of a vacation in Las Vegas! So, in order to whip up some cash for his Vegas trip, Zack is back in combat mode, heading for the "DOA3 World Tournament".