Dual elevation horizontal 2D arcade shoot 'em up co-op helicopter action! With the world facing a desperate energy and economic crisis, rogue forces have launched a coordinated assault on a weakened allied order. Unable to respond directly under the fragile political climate, the Joint Security Alliance has turned to a special helicopter squadron known as the Heli-Cats. Their mission is to repel the invaders under the guise of a local paramilitary unit such that all actions can be disavowed should things go wrong.