When the Zorba family inherits their late uncle's sprawling estate, they soon find out that their departed relative had a rather odd hobby: he collected ghosts. Accumulating a total of twelve (factoring himself into the sum), with a thirteenth predicted to join the ranks momentarily, his collection brings the Zorbas to their wit's end in only a few days. Their lawyer, Ben Rush (Martin Milner) may have a solution to get them out of the place, but will they escape before the prophecy of murder is fulfilled and the thirteenth ghost is revealed?