Zoltar leads Spectra to overtake the universe by using a powerful robot collective called the Space Terrapin. The G-Force must battle these evil forces to protect the Earth's most valuable mineral, vitalumis.

Two astronauts are kidnapped by a submarine after discovering the secret location of the Spectra bases, and G-Force are called in to rescue them and see what they've found.

G-Force learns that several mysterious plane crashes have been occurring on a planet that 7-Zark-7 has discovered. Mark goes undercover and finds out that a giant mummy is bringing down the planes. They must destroy the mummy before it destroys them.

A mysterious space serpent has begun attacking the oil refineries, causing earthquakes. Debbie is upset at Mark after he fails to save her father, Dr. Harland, from dying in an earthquake. G-Force exacts revenge for his death.

Ships are being destroyed on planet Mir, jeopardizing the construction of a new supply station; G-Force get lured into a trap by ghost ships and must figure out who is responsible before it's too late.

G-Force are sent to retrieve the bars of gold that Zoltar stole from the Intergalactic Federation, but while searching for the stolen gold, some of the team are captured and taken to a secret Spectra base.

Mark is selected to test the XF-97 aircraft, but is attacked by Captain Doom's metal whip. Meanwhile, the team head to the planet Ergos in search of the metal's source before other weapons can be constructed with it.

Fearing an attack from a robot sea anemone, the team is used as bait to defend the construction of a secret base somewhere in the depths of the Pacific Ocean.

In exchange for returning to his exiled planet, Commander Typhon aids Zoltar in his quest to take over the Earth by giving him a new weapon that produces meteor showers. Can G-Force stop this ultimate weapon?