The astronaut flew to the planet satellite to check the instruments that are installed at the station, and instead met alien aliens who had already settled and captured the Geona object. Help the hero he is alone against the whole army of invaders, but there is a chance to destroy them if you act rationally and carefully. Use everything that gives you the opportunity to hide from the shots of the enemy, suddenly jump out and shoot immediately. There are eleven levels ahead, and in conclusion it is necessary to destroy the leader.