There’s a pit left open at a small out door area showing the La Brea tar pit prehistoric animals in LA. In 1976, archeologists dug a pit and went down to explore. They never came back. The tar monster got them, and though a man on the street tells the story of the monster and what happened, no one believes him. A father and son who just don’t get along work together next door, but they have to move to make way for a new development. The father doesn't think the son will ever amount to much, but guess what? Not true. This is a tar-tamed spoof of an urban horror flic, full of pretty women with big busts (one in particular), so I'm sure you can guess what happens.
The tar monster is after them all because that area was built over this prehistoric tar pit area. Lots of guys and gals get tarred. This film has no surprises.