# Aliens have invaded our galaxy and are trying to consume all stars in it. You, as part of ADU, must defend it. Aliens have invaded our galaxy and are attacking solar systems through out Milky Way trying to consume all stars in it. If they succeed there will be only darkness. As part of the Astral Defence Unit (ADU) it is your job to defend our solar systems, one at a time. The fate of our galaxy is in your hands.