Lion-O is plagued by nightmares of Thunderians being killed on Thundera, while he escaped to Third Earth with Jaga and the other ThunderCats. Jaga reveals that three more Thundercats survived and are living on Third Earth. The ThunderCats search for them, but Mumm-Ra captures them and takes them to Fire Rock Mountain.
Thundercats Ho! The Movie
The Lion-O struggles to come to terms with the devastating memories of his people's massacre on their homeworld, Thundera, and the trauma of escaping to Third Earth with Jaga and a handful of surviving ThunderCats.
