Panic grips a small community after a tanker truck crashes through a fence at a wild animal park, freeing dozens of dangerous beasts.

The whitewater raft trip of two couples is interrupted by a visit from four prison escapees who take the women hostage to aid in their escape. The husbands break free from their bonds and raft down the river in hopes of rescuing their wives.

A technician brings a frozen specimen of the original Blob back from the North Pole. When his wife accidentally defrosts the thing, it terrorizes the populace-- the local hippies, cops, drunks and bowlers must all face the Blob!