In the year 2091, following a coup d'état on the planet of Karaba, a fleet of ships belonging to the Karaba Royalists approaches Earth seeking asylum. However, granting this request puts the Earth government at odds with the Karaba Revolutionary Army, who begin launching EMP terrorist attacks to pressure Earth into handing over the Royalists. As a new Public Safety aide stationed in Lunar City on the Moon, the player is tasked with responding to incidents and keeping the peace.