Dr. Sonya Popoleyev, of the St. Petersburg Institute of Primate Study, hires P.I. John Denson and his partner, self-proclaimed shaman Willie Prettybird, for an unusual task--to help her find the legendary Sasquatch. Now on Mount St. Helens, strange things are in the air--something out there definitely looks like Bigfoot, but something looks like snowmobile tracks too.