Lion-O is haunted by nightmares of Thunderians being killed on Thundera while he fled to the safety of Third Earth with Jaga and the other ThunderCats. Jaga later tells Lion-O that three more Thunderians have, in fact, survived and are also living on Third Earth. The ThunderCats decide to search for the other Thunderians, but Mumm-Ra has plans as well and takes the new Thunderians as his prisoners to Fire Rock Mountain. Lion-O loses the Sword of Omens in an avalanche while Panthro battles the Fist-Pounder with the ThunderTank as the ThunderCats close in on rescuing the Thunderians from Fire Rock Mountain, but they'll need supernatural help if they are to pass through the Thundranium gasses to reach them...
Genre: Animation, Fantasy, Adventure, Action, Family
Stars: Bob McFadden, Earl Hammond, Larry Kenney, Lynne Lipton, Earle Hyman, Peter Newman
Crew: Katsuhito Akiyama (Director), Leonard Starr (Writer)
Country: United States of America
Language: English
Studio: Rankin/Bass Productions, Lorimar Telepictures
Runtime: 91 minutes
Quality: HD
Released: Nov 16, 1987
IMDb: 3.5
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