After a secret mission to the moon, an American space shuttle crash lands in Øresund, the strait between Den-mark and Sweden. Aboard the space shuttle is an unknown and highly radioactive type of slime, which has been unearthed from the back of the moon. When the slime oozes out into Øresund, an unstoppable mutated monster is created, spreading an inferno of death and destruction amidst the idyllic summertime.