In a world without the green, the rot reigns. Dr. Alec Holland is Swamp Thing, avatar of the green – the life force of all plants. Buddy Baker is Animal Man, avatar of the Red – the life force of all animals. Together, they thought they could defeat the force of death and decay arrayed against them both. They thought that if they entered the world of the Rot, they could end its threat – and the menace of its chief servant, Anton Arcane – forever. They were wrong. Now Swamp Thing has returned from the purgatory of pestilence to an Earth transformed. A poisoned world where life exists only in isolated pockets, on the verge of extermination… where the greatest heroes ever known are reduced to ravenous undead beasts… where the love of his life, Abby Arcane, is the lynchpin of a plan to eradicate all life. Swamp Thing must fight. He must win. Or the Green Kingdom shall fall.