The cops Tarek Richards (Jalal Merhi) and Linda Masterson (Cynthia Rothrock) in New York on investigating mysterious murders of martial arts masters, whose bodies have wounds similar to scratches tiger. The evidence seems to lead to Chong (Bolo Yeung), a serial killer on the loose who is thus arrested. Chong, however, is escape done by men of his brother, a wealthy crime lord of San Francisco's Chinatown. Cops Richards and Masterson chase him but are captured by two criminals and their followers. The Masterson is locked in a cell, while Richards is forced to participate in a strange martial arts tournament held in the underground city. The four finalists should, with their mystical powers, open a time portal of the Chinese New Year.