The Man from Bitter Ridge is a film directed by Jack Arnold. Jeff Carr, a special investigator, arrives in Tomahawk. His assignment is to discover who has been holding up the local stagecoach and is guilty for a series of killings that terrorize the town. Sheepman Alec Black is suspected by the local population but it is not long before Jeff realizes the man is innocent. Alec even becomes a good friend although he is in love with the same woman as him, Holly. Jeff will manage to arrest the real culprits but not before the latter try to compromise him down.

Volcanic activity frees giant scorpions from the earth who wreak havoc in the rural countryside and eventually threaten Mexico City.

Global panic ensues when it is revealed that a mysterious UFO is actually a giant turkey-like bird that flies at supersonic speed and has no regard for life or architecture.