(From the Back of the Box)
"The Omega Peace Accords have been violated by the Plexarian Invincibles. Their Bio-transporters have warped into the Earth's atmosphere and threatened total destruction. The ground trembles and nature rebels as wave after wave of slime oozes from the heavens. "
"The diabolical alien plan is to raise the level of the Earth's oceans and drown out all life so that the slime-breathing Invincibles can colonize ..."