In 1986, led by terrorist Carlos Sanchez, nuclear devices are planted in American cities. As New York and other cities are swallowed up in fireballs, Patch Kincaid is sent back in time to prevent the destruction. He lands in 1961, where he chases Sanchez into the Bay of Pigs Invasion. Captured by Castro, Patch and his mentor, Meinkewitz track Carlos into rural Cuba.
Patch's actions result in President John F. Kennedy's assassination.