Fed up of feeling useless Wilykat convinces his twin to run away from home, but living on their own is more dangerous than they realized. The other ThunderCats search desperately to find them as they all must learn a lesson in communication.

Hair of the Dog

While all the ThunderCats except Lion-O are gone, Mumm-Ra switches Ma-Mutt with Snarf. Ma-Mutt poisons Lion-O allowing Mumm-Ra to move in.

Vultureman’s Revenge

Vultureman builds a Thundranium projector which is capable of creating concentrated regions of Thundranium. When the ThunderKittens damage it, he damages their spaceboard sending them off into danger and while Lion-O and Snarf search desperately for the kids, Vultureman plans his revenge.

ThunderCubs – Pt. 1

Mumm-Ra learns of the treasure of Thundera and the Sword of Plun-darr which destroyed Thundera. He recreates Thundera and travels there whilst the ThunderCats try to find him.

ThunderCubs – Pt. 2

After being rescued the ThunderKittens give a presentation on their observations of New Thundera. Vultureman renovates the Rat Star to ambush the ThunderCats on their way to New Thundera.

ThunderCubs – Pt. 3

Mumm-Ra claims the Sword of Plun-darr and nears the treasure of Thundera. The ThunderCats land on New Thundera.