As Lion-O and Pumyra try to evade Mumm-Ra and his forces in the mines of Mount Plundarr in an effort to keep the Sword of Plundarr out his hands, we flash back in time and discover its origin … and its relationship with the Sword of Omens.

“ThunderCats” © Warner Bros. Entertainment Inc. “ThunderCats” and all related characters and elements are trademarks of and © Warner Bros.About the series:The ThunderCats are on the move! After the kingdom of Thundera is attacked by the lizard people, Lion-O leads Tygra, Cheetara and the other heroes on a quest for the Book of Omens and the magic stones of legend. But he'll have to face villains like Mumm-Ra, the ancient evil sorceror, and Slithe, the dangerous lizard general. Luckily, he has the Sword of Omens and its amazing powers at his disposal. Watch free online videos and get free downloads from ThunderCats on Cartoon Network. ThunderCats, ho!