In the 21st century, aliens invade the solar system. Using Mars as their base, they steal all of Earth's space stations then brainwash or kill the crews.
After the death of Cyrus, his attorney Corby invites his relatives and Joyce Norman is declared as the sole beneficiary. Cyrus has drafted a second will that puts Joyce's life in danger.
A group of explorers are pulled to the bottom of the sea after their ship is attacked. They then discover the lost city of Atlantis, which is inhabited by creatures from another planet.