Trial by Terror (S02E07)

Thundarr’s companion Thorac faces a dire fate, accused of stealing fuel from a nearby village and sentenced to a gruesome death by boiling over a geyser. Thundarr intervenes just in time to save him. As they delve deeper into the situation, they uncover that Sheriff Korb is colluding with the wicked wizard Artemus, who has pilfered the village's fuel to fuel his menacing Death Ship and win favor with the Council of Wizards. With this revelation, Thundarr and his friends set out to expose the treachery and clear Thorac's name.