Andy travels back 95 million years in search of an eggshell belonging to one of the biggest animals to ever walk the earth.

Andy travels through time and lands 30 million years ago in Mongolia, where he meets the Paraceratherium - a giant mammal which is five times the size of a Rhinoceros!

When disaster strikes at the museum, Andy sets off on a prehistoric adventure using his trusty, time-travelling clock. Arriving 30 thousand years in the past, Andy joins a herd of woolly mammoths and bumps into one of his own ancient ancestors.

Andy travels 100 million years back to prehistoric times to meet the Spinosaurus, a massive meat-eating dinosaur that is even bigger than the T rex! On his adventure, Andy rides a speedy Ouranosaurus and takes a dip in a prehistoric river.

Andy and his time travelling clock head 160 million years into the past in search of a feather belonging to a tiny prehistoric dinosaur called the Epidexipteryx. But an encounter with a hungry meat-eating dinosaur leaves Andy stranded in the tree tops.

Andy searches for the tiny Leptictidium, a furry mammal that used to bounce around the forests of Europe fifty million years ago.