In the first story, while working on a restorative formula that can make forests out of deserts in the Louisiana swamps, scientist Alec Holland is killed by a bomb set off by Mr. E., who wants the formula. Shortly thereafter, a humanoid plant being rises from the swamp--the Swamp Thing!
In the second story, the Un-Men capture Swamp Thing and take him to their creator, Dr. Anton Arcane, who wants to become a Swamp Thing himself.
