After being exposed to the radiation of a meteor that had just crashed to the Earth, David's transformation back from the Hulk stops midway, leaving him half-Hulk/half human.
David's half-Hulk/half-human condition leads a military group called Prometheus to believe that he is an alien, so they capture him, and then send him to a lab for study.
In one of his latest experiments, David's attempt to control the Hulk backfires. He inadvertently releases a darker personality, causing the Hulk to be more violent--and potentially capable of murder!
While working at a power plant, David survives an electrial accident that gives him the ability to foresee events--including violence by the Hulk. Meanwhile, as the plant faces possible lay-offs, David befriends a co-worker who has a heart condition.
Unbeknownst to David, the car that he is renting happens to be filled with stolen money. To make matters worse, David ends up being pursued by the thugs who are trying to fetch the loot.
A 1940s-style detective can't explain why a corpse is found in his office; except that it may be related to an extortion plot, a mysterious gardener, and a green creature.
With David's help, a woman tries to reopen her wax museum, which was nearly destroyed by a fire. But the task isn't easy, in part because the woman has hallucinations that are brought on by a questionable drug that she is taking.
David's attempt at a cure is hindered by the other man's exposure to radiation, which revives the murderous Hulk persona the man was cured of many years before. Now, David must produce enough antidote to cure both himself and the other man before more carnage occurs.
David travels to Baltimore where he befriends a midget wrestler who has a habit of telling tall tales. Unfortunately, one of those tales gets David in trouble with mobsters.
David becomes business partners with the owner of a struggling clothing factory in New York City. Unfortunately, however, the promotion spells trouble when loan sharks enter the picture.
