"From beyond any known galaxy, bringing with them the laws and ideas of their doomed planet, come the ThunderCats. These brave and courageous cat-like humanoids carry with them the powerful Sword of Omens, which contains the mysterious Eye of Thundera- the source of the power of all ThunderCats. But there's also a treacherous band of hideous mutants from the planet Plun-Darr who want the sword. Crash landing on Earth, the ThunderCats battle these evil creatures who are aided by the supernatural powers of the deadly and mysterious Mumm-Ra. You'll experience many incredible adventures in this epic science fiction saga."