Andy visits the time of the massive carnivore Tyrannosaurus rex, 65 million years ago. He searches for a piece of pumice stone in a volcano. A T-rex shows an interest in Hatty's backpack.

Andy visits the time of the 25-metre long herbivore Diplodocus, 152 million years in the past. He searches for a giant fern and sees an adult diplodocus toppling trees with its front legs.

Andy travels back 106 million years to the time of the Leaellynasaura, a dinosaur that lived in Australia. His mission is to find broken egg shells from the nest of a mother Leaellynasaura.

When Andy breaks an ammonite shell at the museum, he travels back 149 million years ago to find a replacement.

Andy travels back in time to collect blue feathers from the Iberomesornis, which was native to Spain 127 million years ago.

After breaking a Triceratops horn at the museum, Andy must travel back 65 million years to the time of the North American plant-eating dinosaur to find a replacement for it.