Nina Williams, world-renowned assassin, has been hired by the CIA and MI6 to join a team that is attempting to infiltrate "Kometa," a notorious criminal organization. The team's strategy involves gaining access to the target through a fighting tournament being held on the "Amphitrite," a luxury cruise ship owned and operated by Kometa. A leaked video on the Internet showed a Kometa ship exploding within the Bermuda Triangle, and it is feared that they are working on some kind of superweapon in the aftermath of the fall of the Soviet Union. Nina's official cover involves infiltration as a competitor in the tournament. However, Nina is also the team's "sweeper"; should her partners fail, she must finish the job. Nina enters the competition but is quickly discovered and captured. She soon receives a communication informing her of the team's failure and the death of one of the agents named John Doe (killed by Kometa executive Edgar Grant), and that she must now conduct the operation herself.