Return to Thundera Part I

Third Earth is at peace, the Mutants and Luna-Taks are banished, and the ThunderCats board the Feliner for New Thundera while the League of Third Earth cheers the take-off from a safe distance. Mumm-Ra, weak but not finished, follows them in the Mumm-Raft. What they find is a ruined city, a valley of Stone Giants lying half buried in dust, and a voice telling them to look beneath the Churning Rocks, where Jagara holds the planet steady.

Summarised from the original production script, with AI assistance. This is not the studio's own synopsis.

Speaking parts counted from the 49-page production script, with the number of lines each: Mumm-Ra (46), Lion-O (42), Jagara (19), Panthro (12), Cheetara (10), Snarf (5), Lynx-O (4), Egbert (4), Willa (3), Nayda (3), Bengali (3), Music up (2), Ro-Ber-Bill (2), Mandora (2), Snarfer (2), Wilykit (2). Line counts come from the script rather than the finished episode, so they will not always match what was recorded.

1. The production script for this episode survives as a recording script, 49 pages, 44 scenes, in 2 parts.
2. The script is titled "Return to Thundera Pt I" on its cover, which differs from the title the episode went out under.
3. Scripts record what was written, not always what was recorded. Lines here can differ from the broadcast episode.