With the Sword of Omens broken, and bitter division spreading over what to do with Calica, the ThunderCats are in turmoil ? and the time is ripe for Mumm-Ra to strike! Casting aside his diminished appearance, the devil-priest attacks with his legion of mummified Mu'Tants. It's the moment of truth for Lion-O ? will he prove himself to be a worthy leader? Or will his youth and inexperience condemn the last survivors of Thundera to their final doom?

Find out in the planet-shaking climax to the first ThunderCats story arc ?brought to life by the acclaimed creative team of DECLAN SHALVEY (Old Dog, Hero Killer) and DREW MOSS (Gargoyles: Dark Ages) and adorned with exceptional covers from DAVID NAKAYAMA, LUCIO PARRILLO, JAE LEE & JUNE CHUNG, SHALVEY, and MOSS!