sentences:  He is trying to wipe out humanity on all three Earths so his people can rule once again.They are all defeated, and the heroes then head to the Rock of Eternity, with Superman leading the attack.Despite turning Superman against the other super heroes using a Red Kryptonite chunk which fills Superman's mind with rage and makes him invulnerable to green kryptonite he is eventually defeated after Captain Marvel knocks him out, Jr. destroys the Red Kryptonite, Mary frees the Elders, and Cap uses his lightning to restore Superman's mind.