Two women discover a crude black cross painted on their door. When the amateur sleuths investigate, they learn they've been marked for arson and murder along with a number of others. A questionable detective arrives to allegedly protect them as mystery swirls around the Black Cross anarchist group which is terrorizing the local area. When the men in their lives disappear, the sleuths hole up in a remote mountain cabin with enough ransom money to free their men, but they're hunted down themselves and wind up on a Wyoming ranch as prisoners of the Black Cross group, with a surprising conclusion.