The crew of the Enterprise must defend the planet Ventax from a mythological Devil who re-appears when a 1000 year long era of peace comes to an end.

Stardate: 41509.1 The children of the Enterprise, including Wesley Crusher, are abducted by a race of sterile people who are unable to have children of their own.

A WWII captain finds himself in the desert, next to his crashed plane. Where is his crew? And why are futuristic jet planes flying overhead?