Astronomers are constantly watching the cosmos and not only for new discoveries, but also to avoid all sorts of trouble in the form of an asteroid strayed from the path or uninvited guests. On the eve of what happened. In the zone of visibility of a powerful telescope, an unusual movement toward the Earth was observed. Earthlings decided not to wait for the attack, but to send several ships to intercept the alien, and if they had to destroy it. You in Arcade defender will control one of the fighters and try to survive by destroying the enemy.