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ThunderCats Episode 4.20 The Book of Omens
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ThunderCats Episode 4.20 The Book of Omens

Episode Premiere
September 29, 1989
Genre
Animation, Adventure, Family
Production Company
Warner Bros. Animation
Official Site
http://www.cartoonnetwork.com/tv_shows/thundercats/index.html
Episode Premiere
September 29, 1989
Genre
Animation, Adventure, Family
Period
2011 - 2012
Production Co
Warner Bros. Animation
Distributor
Cartoon Network
Official Site
http://www.cartoonnetwork.com/tv_shows/thundercats/index.html
Screenwriter
William Overgard
Main Cast
  • Will Friedle
  • Emmanuelle Chriqui as Cheetara
  • Kevin Michael Richardson
  • Matthew Mercer
  • Larry Kenney
  • Clancy Brown as Grune the Destroyer (voice)
  • Robin Atkin Downes
  • Jim Meskimen

New Thundera is being torn apart and the Thundercats must present certain artifacts at various dangerous locations that used to be beautiful places, then Lion-O must go into the book and give the Key of Thundera to the guardian of the book ""at the 24th hour,"" or the Thundercats will be frozen in time and New Thundera will be destroyed. But Mumm-Ra steals the book and key and journeys into the book himself. He wants to save New Thundera BUT wants the Thundercats frozen in time. The Ancient Spirits of Evil try to stop Mumm-Ra because they fear if Mumm-Ra goes into the book, their powers will cease to exist. The other Thundercats run into problems also at the locations they are supposed to be at. Lion-O goes into the book using the Sword of Omens and battles Mumm-Ra one on one, neither of them using any magic. Even when Mumm-Ra cheats, Lion-O still wins. The ASOE summon their ""champion,"" Pyron, to then fight Lion-O, but Lion-O gets the dragons in the book to fry him... He presents the key