G.I. Joe: The Movie

G.I. Joe The Movie is a 1987 animated film spinoff from the animated series G.I. Joe A Real American Hero, based on the original Hasbro toyline. It was produced by Sunbow Productions and Marvel Productions and was animated in Japan by Toei Animation.

While Cobra Commander and Serpentor blame each others stewardship of Cobra as the root cause of the organizations failures, Pythona, a woman from the secret civilization CobraLa, infiltrates the Terror Drome. While there, she reveals to Serpentor that CobraLa was responsible for inspiring Doctor Mindbender to create Serpentor through dream manipulation. At her urging, Serpentor plans to capture G.I. Joes latest weapon, the Broadcast Energy Transmitter BET.Cobra assaults the Joes as they test the BET in the Himalayas. The Joes use the BET to activate their automated weapons systems. Serpentor is captured and Cobra Commander orders a retreat. Cobra Commander leads his troops into CobraLa. ........

Source: Wikipedia