The player takes the role of a Freedom Fighter who must destroy five targets, including the Vinsk (a flying battleship in the Game Gear version, an ordinary ship in the Master System), the CB-53 Bomber, "El", and two cliff fortresses.

Shooting either the spinning fighters, the small flying helicopters, or the mines on the final mission will earn the player a power-up that allows them to upgrade or downgrade their firepower.

developed a huge laser emitter, "EL", which is capable of gradually destroying the ozone layer over the course of a decade or so.

The nations' defense forces are overwhelmed by the sheer power and size of the enemy.

The player controls the mysterious "Freedom Fighter", a pilot with no official connection to any government, who flies off to stop the N.A.C.