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?