A tribe of worm-like creatures captures Dino Boy and Ugh must plan a rescue.

While running from a T-rex, Dino Boy and Ugh are captured by the Moss Men after falling into a water-filled hole that leads to their lair. The Moss Men plan to use Dino Boy as a sacrifice. Ugh must defeat the Moss Men and rescue Dino Boy before it is too late.

Dino Boy is captured by a group of Treemen to serve as a sacrifice and Ugh must leap into action with the help of some mammoths.

A Fire God captures Dino Boy. The Saber-Tooth People plan to sacrifice him, but Ugh is determined to foil them.

Dino Boy and Ugh venture into the snow-capped mountains to rescue a young tribal girl from a large Snow Creature.

Ugh is captured by the Wolf People. Dino Boy and Bronty must save him.

During an earthquake, Bronty is captured by a giant and Dino Boy and Ugh must save him.

Ugh is captured by the Ant Warriors after fighting a Stegosaurus and got away. Dino Boy tries to rescue him, but ends up having to save the Ant Warriors from a Megatherium.

Dino Boy and Ugh are forced to protect a Bird Rider from the Rock Pygmies.

While running from a volcanic eruption, Dino Boy ends up in a valley of giants. He has to run from giant ants and Ugh must come to the rescue.

Dino Boy and Bronty get in trouble with a Smilodon and are separated. Bronty is captured by the Rock Pygmies and Dino Boy must save him while leaving markers to show Ugh where he went.

After rescuing a kid from some Birdmen, Dino Boy and Ugh row along the Danger River to bring him home, where they encounter various threats like the Snake People and dangerous river rapids.

While showing off his kite invention to Ugh, Dino Boy ends up crashing into the mountains and ends up captured by the Vampire Men.

The Sun People are hunting and start chasing Ugh. Dino Boy must save him.

Ugh is captured by the Sun People to serve as a sacrifice and Dino Boy must stop them.

Dino Boy teaches Ugh how to shoot a bow and arrow and Ugh throws his club at a rock but it was revealed to be a T-rex who attacks them. After that a Pteranodon kidnaps Dino Boy for food and Ugh must save him.

Dino Boy and Ugh are collared for attacking a Spear Warrior and have to fight their way out.

As Dino Boy teaches Ugh how to spell, they are attacked by venomous wasps who sting Ugh. Dino Boy must get some choka leaves from Misty Island or Ugh will die. At the same time, he must stop two Moss Men from sacrificing one of their own.