The rebels sabotage the meteor launching track; Dragit captures them.
Gen. Gordon tells the president the invasion is a sham.
With Doc, the team plans a counterattack.
The friends head for Camp David; a shape-shifter has replaced the president.
David trusts Angie and Stark; Dr. Lear allows the hybrid twins to escape.
After Tyrusians try to brainwash David, he escapes and flees to Washington.
The moon base is rebuilt after Rafe's attack.
A rebel commander contacts David at the underground chamber.
Dragit launches meteors against Earth; an AWOL Tyrusian soldier joins David's mission.
David and Rafe attempt to infiltrate the underground alien base on Earth. Voices of James B. Sikking, Greg Eagles, Mikey Kelley and Edward Albert.
On Maple Island, David learns of his Tyrusian heritage.
Tall Men seek David and Rita for vengeance.
A half-human, half-alien fights to save the Earth. This episode: Col. Konrad plots destruction. Voices of Mikey Kelley, Leonard Nimoy and Lorenzo Lamas.