GI Joe - Sigma Six

Cobra Commander sends Zartan and the Dreadnoks to steal a plasma weapon from London. Sigma 6 are joined in the fight by their new allies Lt. Stone and Firefly.

When a computer virus planted by a traitor in Sigma 6 shuts down their new base called the Sea Titan, Cobra Command takes the opportunity to attack in full force.

Following the attack on the Sea Titan, Sigma 6 plans to sneak into a Cobra base in order to find out what they are up to and to find the Dragonhawk. When Lt. Stone's position is compromised and Sigma 6's position is betrayed, a risky choice is made that involves launching a missile at the Cobra base even if it destroys everyone and everything in it.

Cobra Command plans a heist to steal a nanotechnology sample from the Central Museum and Sigma 6 moves in to stop it...but waiting for them is Destro, who uses this opportunity as a chance to test his new "Brain Ripper" mind control device! Hi-Tech is the only member of Sigma 6 left standing...can he and his latest gadgets stop Destro and his insidious Mantis Mech all on his own?

Tunnel Rat loses a bet and must train to become a ninja. He joins Kamakura, Snake Eyes, and Jinx on a trip to Central America, but Storm Shadow and Baroness are waiting...

The traitor in Sigma 6 is revealed as its members are being captured one by one. Duke must use the experimental plasma armor created by Hi-Tech to go to Cobra's base and rescue them.

After fighting through an army of B.A.T.s, Duke must fight through the high-ranking B.A.T.s before his fight with Cobra Commander. Meanwhile, Lt. Stone frees himself and Scarlett in order to free the other Sigma 6 members and duel Firefly.

In this clip episode, Duke holds an award show at the Sea Titan to commemorate the various moments in Sigma 6 history.

When Overkill gets hold of a top-secret biochip, he's able to integrate his synthetic biology with the power of the machine and build a powerful body to battle Sigma Six. Then he tries to steal the remaining chips and turn the world into an electronic extension of himself, and the unlikely pair of Hi-Tech and Spirit is sent to stop him.

Zartan and the Dreadnoks work on a power core where some of its liquids ends up enlarging some insects to giant size.

Cobra Commander uses a weather-controlling machine to hold the world for ransom. Now Jinx, Kamakura, and Tunnel Rat must destroy the weather-controlling machine.

Following the destruction of the Terrordrome at the South Pole, the scattered members of Sigma 6 must make a rescue operation at the North Pole to free Snake Eyes and stop Cobra.