Lion-O, the Thunder Kittens, and Snarf find themselves in a mysterious cave with a Giant crystal situated in the center. Upon further inspection, Mumm-Ra appears in the crystal and then drags the Thunder Kittens inside! With Mumm-Ra now free, Can Lion-O defeat them and save the Thunder Kittens? Stay tuned to find out. This is a story test from a script page for "ThunderCats Roar."