A Stake in the Serpent's Heart

Cobra attempts to destroy New York City, but the Joes counter it with their new MASS device. The Joes notice the ring Duke gave to the slave girl was a homing device, and they teleport to Cobra Mountain. The Joes arrive at Cobra headquarters to launch their assault. Destro turns the MASS device to the direction of earth's core in order, disintegrating it. Cobra Commander, in panic, enlists the help of the Joes to stop the device. After successfully destroying the device, Cobra Commander is arrested and Destro escapes.