In the Loonatics Unleashed series premiere, the citizens of Acmetropolis are living through a heat wave when suddenly, temperatures drastically drop and the planet is in the grip of a sudden cold snap. Zadavia summons the Loonatics to investigate and they find a group of space Vikings are responsible for the deep freeze and must stop the Vikings from making the freeze permanent. The Loonatics are frozen by the vikings but Slam Tasmanian frees them.