A secret "underground race" on an island in the mid-Atlantic ocean has
stolen top military vehicles and equipment from around the world and
have rebuilt powerful war machines from them. They are even piloted by
robots with one mission: to destroy. Military and intelligence
officials of major countries have detected them, but they are afraid
that they will be unable to prepare against an assault by this
underground race. Their plan is to send you in to infiltrate their base
and destroy them before they have a chance to unleash the war upon the
rest of the world. You can choose to control either the Helicoptor or
the Jeep, which have different advantages -- for instance, the
Helicoptor is not obstructed by obstacles but the Jeep can fire in any
direction. There are nine weapons (five permanent, four short-lasting
specials) you can pick up along the way to help you destroy the enemy.