The remains of a towering humanoid creature from the Himalayas wind up under the supervision of Dr. Claire Collier (Juliet Mills), who believes it to be one of the legendary Yeti. Joined by her former student (Richard Joseph Paul), a longtime believer in the creatures existence Rondo Montana (Leon Russom), and others, Dr. Collier leads an expedition into the mountains to track down more of the abominable snowmen. Their trek results in an encounter with a tribe of primitive hominids which in turn leads to the far more frightening discovery of beings they never could have expected or imagined.