The members of the Porter family find themselves trapped in a prehistoric world; they face a Tyrannosaurus rex and find a dinosaur egg that hatches.

Tom is bitten and poisoned by a lizard while searching for a mystery woman Kevin caught on film; the mystery woman, named Christa, helps Kevin look for an antidote.

Tom and Kevin go to rescue Tasha after she is kidnapped by lizard people called Sleestaks.

A lunar eclipse causes the animals and dinosaurs of the land to act strangely; Tom desperately tries to find Christa again.

Annie is turned evil by the power of a crystal that the Sleestaks lost.

Tom decides to send Tasha back into the wild after she causes too much trouble.

A knight named Sir Balen arrives in a portal similar to the one the Porters arrived in.

Kevin falls into an underground cave and gets stuck there by Scarface while trying to help his family stop an erupting volcano from destroying their home.

Shung uses a magic crystal to control Christa's mind.

The family discovers weird noise and static coming from Kevin's TV after an earthquake; Tom thinks the TV can be used to track down a portal to get them home.

Tom and Kevin go to find water while Stink and Tasha look for fruit during a heat wave.

Kevin is convinced that Stink is the culprit when objects start disappearing from the tree house.

Tom sets out to take crystals from the Sleestaks to see if they can power the electrical items when all their batteries die.