Tygra takes Lion-O climbing up Hook Mountain to teach him a lesson about trust. But when they get trapped by a snowstorm and take refuge in a cabin owned by the creepy Snowman, it's Tygra's ability to the trust that's gonna be tested.

Cheetara is the fastest living being in the universe, until Monkian beats her in a race! Now Cheetara has to find something else to be the best at, while the rest of the ThunderCats find out how Monkian got so darn fast!