An undersea weapons facility has been taken over by terrorists who are threatening to detonate a thermo-nuclear device. It's up to the counter-terrorist team the X-Perts to defeat the enemy and retake the facility. Players can switch between three characters: Eternal Champions' Shadow Yamoto and her two colleagues, computer programmer Zachary Taylor and robotics engineer Tashile Claudel. They all have unique weapons, attacks, torture moves, and technical skills required to advance through each level.