With the world currently facing a severe energy and economic crisis, a group of rogue forces has launched a well-coordinated assault on a weakened allied order. Due to the fragile political climate, the Joint Security Alliance cannot directly respond to the situation. Therefore, they have assigned a special helicopter squadron known as the Heli-Cats to repel the invaders. The Heli-Cats will operate under the guise of a local paramilitary unit to disavow all actions if things go wrong. The mission of the Heli-Cats is to take control of pilots “Tiger” and “Lynx” and lead them into battle against the enemy forces. They will fight their way through the enemy lines and try to uncover the reasons behind the instigation of the attack.