Key to Thundera
Episode 11 · 1988-09-19

- Animation
- Sci-Fi & Fantasy
- Action & Adventure
- Kids
Episode overview
While trying to figure out a way to read the Book of Omens, Lion-O tries looking through the sword at the book. He is immediately drawn into the book, where a voice asks him if he has ""the key."" Lion-O says he doesn't, and four dragon heads appear and shoot fire at him. Snarf, who saw Lion-O get sucked into the book, tries to show Cheetara what happened, and he too gets sucked in. Mumm-Ra, who also watched Lion-O get sucked in, goes to cats lair and takes the book so he can destroy it with Lion-O inside. Meanwhile, just by coincidence, Panthro finds an odd looking key on Thundera. He and Tygra head back to Third Earth with the key, not knowing what it's for. Back on Third Earth, Mumm-Ra is just about to boil the book when Lion-O calls for the sword, and it brings him and Snarf back outside. Mumm-Ra takes the sword and looks through it at the book, and he gets sucked in! But Lion-O has to save him because of the code of Thundera, and Lion-O does save him. Panthro and Tygra arrive with t
22 minutes
Season 3 episodes
1. ThunderCubs (1)1988-09-05
2. ThunderCubs (2)1988-09-06
3. ThunderCubs (3)1988-09-07
4. ThunderCubs (4)1988-09-08
5. ThunderCubs (5)1988-09-09
6. Totem of Dera1988-09-12
7. The Chain of Loyalty1988-09-13
8. Crystal Canyon1988-09-14
9. The Telepathy Beam1988-09-15
10. Exile Isle1988-09-16
11. Key to Thundera1988-09-19
12. Return of the ThunderCubs1988-09-20
13. The Formula1988-09-21
14. Locket of Lies1988-09-22
15. Bracelet of Power1988-09-23
16. The Wild Workout1988-09-26
17. The Thunderscope1988-09-27
18. The Jade Dragon1988-09-28
19. The Circus Train1988-09-29
20. The Last Day1988-09-30