Wolfman stated the basic concept: thrust an entire mid-town Manhattan office building into a prehistoric setting-into jungle inhabited by dinosaurs, and observe how us sedentary modern-types would cope on a totally alien yet familiar world.

Skull the Slayer is a trained soldier turned superhero who wears a Scorpion power belt that enhances his strength and durability.

Jim Scully was an adventurer whose plane went through a time warp in the Bermuda Triangle, marooning him and three companions in an alternate Earth where dinosaurs, primitives, and aliens co-existed.

[2] He served in Doctor Druid's team of occult investigators the Shock Troop, alongside Sepulchre and N'Kantu, the Living Mummy.

[volume & issue needed] After an invasion attempt by the alien Emperor against both groups' Earths was thwarted by the efforts of the heroes, Skull and Lee decided to stay behind.

While drinking, Skull the Slayer revealed to Arkon that he was sent by Morgan le Fay to kill him and both men started to fight.

In a failed attempt of killing himself as well as his enemy, Arkon cut the ropes that kept the saloon suspended and they fell into the swamp below.

The hallucination ended with the arrival of the Swamp Queen of the Man-Things, a version of Jennifer Kale who is behind the rebellion against Morgan le Fay.