An oil company brings back microbe samples from the Antarctic... which thaw into savage primates which go on a rampage through Chicago.

A developer moves a cemetery as he prepares to build. But carelessness allows an old evil, once laid to rest, to return again: a motorcyclist with no head, resuming an old agenda of revenge for a prank gone horribly wrong. As usual, Kolchak finds himself in the middle of it, and if he's not careful he may lose his own head.