Summary

After breaking a magical seal, two Balkins on Third Earth accidentally unleash an ex-ThunderCat set on seeking revenge for being imprisoned there by Jaga long ago.  The ThunderCats must fight an enemy they cannot see or touch, one who wields a mace coated in Thundrainium, an element that weakens them.  They must battle Grune the Destroyer, ghost warrior!

Dr. Zhie