Will finds a car in the swamp, and attached are two married ghosts and their remains. The search for their killer, who just might be an old acquaintance of theirs, begins with the help of Will and the Swamp Thing.

A lunatic escapes from a local asylum and knocks on Tressa's door late at night. He proclaims himself as an alien killer. Even the Swamp Thing is in danger.

Dr. Arcane attempts once again to obtain the bio-restorative formula from the Swamp Thing. However, this time Arcane has a helper, and the Swamp Thing knows her as his late wife, Linda Holland.

Veteran actor Roscoe Lee Browne plays an "Ogun", a voodoo priest whom Arcane employs to destroy the Swamp Thing.

Arcane captures Jim and sells him into slavery after the boy is witness to the evil doctor's hideous transformations of men into monsters and the local sheriff is in on the plans. Jim's 17-year-old half-brother, Will, arrives to investigate Jim’s disappearance and teams up with the Swamp Thing to find him.

Arcane plots and murders the local district attorney when he swears to bring Arcane down. A high profile murder tied to Arcane would be hard to hide, unless someone nobody would suspect commits the crime. Somebody like...the Swamp Thing.

Tempers flare when Will's estranged father shows up looking for a rare white orchid that Arcane has paid him to steal. Will's trust is broken, and so is the swamp's when he leads his father to it unwittingly. Meanwhile, Arcane tests his poisonous mutant garden on Abigail.

Still fruitlessly searching for her missing son Jim, Tressa is diverted when she hears the voice of her former boyfriend, a radio jockey from the 70's. Tressa begins a second hunt for answers, as she discovers what really happened when her boyfriend disappeared 18 years ago, guided by his voice from the grave.

Arcane accidentally creates a half-plant/half-robot with evil intentions from a mutated garden. The results are deadly to the swamp.

Arcane has unleashed his latest mutant monster into the swamp to eat everything it sees and if this test trial works, then more will be released. To ensure that the Swamp Thing does not interfere, he takes a hostage and bargains for immunity.

Jim and Tressa may have to leave the swamp after a lawyer delivers a notice of eviction in the form of a will from Tressa's late mother. They are unaware that the lawyer is in league with Dr. Arcane. Meanwhile, Tressa's mother's spirit guides her to the swamp where the real answers lie.

Tressa and her friends are victims of another one of Arcane's experiments for General Sunderland. Tressa tries to save her friends when they suddenly disappear in the swamp right before her eyes.

The Swamp Thing is struggling to remain hopeful that he will be human again. Someone from the past comes to visit him, using Will to guide her to him. Only Will does not believe that she is who she says she is, and he is about to learn who he can and cannot trust.

Ann Fisk, a scientist and former student of Alec Holland, is in town. Ann's mentor, Carter LaRoche, has designs to build a recycling factory under Arcane's financing in the swamp. Ann must trust a strange voice in the swamp to expose an evil that she is not aware of.

Ian James, an unscrupulous anthropologist, has come to the swamp to create a reputation for himself and the swamp suffers for it. Tressa is quite taken with him and in the process, the Swamp Thing is caught on film.

The Swamp Thing's worst enemy is also the enemy of the swamp...himself.

Arcane finally resurrects his wife Tatania, only to learn the woman is an impostor. A few hours in the lab with this woman leads Arcane to discover the true whereabouts of his beloved wife and the identity of her captor; General Sunderland.

A mysterious couple search the swamp for the legendary Fountain of Youth. Arcane learns about the couple's plans and tries to find the Fountain first, as Will is caught in the middle of the couple's debate on whether or not the Fountain even exists.

Arcane's protégé, whom he refers to as the "Crown Prince", is experimenting with hatred pheromones and his latest batch, which supposedly failed, is dumped in the swamp. The Swamp Thing has to intervene when Tressa is exposed and is in danger of being murdered - by everyone.

Arcane experiments on an innocent man by murdering him and trying to revive him with a serum, stolen from Alec Holland years ago. The man comes back to life again with severe side effects for anyone who touches him, even the Swamp Thing.

Will is taken hostage by two greedy explorers who force him to help them find the location of a mystic Mayan temple in the swamp, housing buried treasure and ghosts.

When Arcane unleashes a genetic assassin into the swamp in the form of a virus, he gets more than he bargained for; he not only gets rid of the Swamp Thing, but he accidentally brings Alec Holland back.

Graham leads a team of heavily armed mercenaries into the swamp to kill the Swamp Thing once and for all. Meanwhile, Tressa learns a few of the secrets of the swamp when she has a wounded visitor.

A thief on the run from his female accomplice chooses the swamp as his hiding place for a fortune in stolen cash - and Jim's house as his final stop.

Jim is feeling lonely and tries to make a new friend when he meets a mysterious young girl in town, named Lily, who invites herself into Jim and Tressa‘s home, and who carries a dark secret.