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.

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...

Snake Eyes falls into a trap in wintery Romania and Duke, Scarlett and Heavy Duty come in to rescue him. However, they end up trapped themselves by Destro and the heat is on. Will Snake Eyes and his new wolf friend be able to save them in time?

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.