When the undead overran the Earth, the destruction of Mother Nature was beyond comprehension. On one side, there were the people, they consumed all they could and made no attempt to clean up the damage. Then there were the zombies, unrelenting destroyers trampling plants and decimating animals. Finally came the devastation as nuclear power plants exploded, hazardous waste spilled, dams burst, infrastructure crumbled.
Gaia called her ring bearers to aid her in survival. They fell one-by-one to the hungry gaping maws of the undead. Captain Planet watched on helpless from the confines of the haven in which he inhabited. Until barely hanging on, Gaia set him free.
He has declared war upon the undead and any human that destroys Mother Earth.