G.I. Joe: The Revenge of Cobra Episode 3 The Palace of Doom Episode Title:The Revenge of Cobra, Part 3: The Palace of Doom.Episode Description:Cobra and the Joes head for "The Palace of Doom", an alleged cursed Aztec temple, to retrieve the first fragment, the "Ion Correlator". Cutter, Wild Bill and Spirit along with Doc, Torpedo, Clutch and Rock 'n Roll head to an unstable island in the Pacific called the "Island of No Return" to retrieve another fragment, the "Hydro Master", and are opposed by the Baroness, Firefly and Zartan. The Joes retrieve the correlator, but they lose the fragment to Cobra during an earthquake.