Andy travels back 152 million years, to the time of diplodocus - a massive 25-metre-long plant-eating dinosaur. His mission is to find a dung beetle. Along the way he witnesses a baby diplodocus emerging from the ground to take their very first steps. But, will Andy succeed in time before the museum opens?
Andy travels back 150 million years to the time of brachiosaurus - a huge plant-eating dinosaur measuring 26 metres from nose to tail. His mission is to find a branch of a monkey puzzle tree - the favourite food of a brachiosaurus. But they are over 40 metres tall with no low branches - will Andy get his hands on one? And if he does, will he make it back to the museum in time before it opens?
Andy travels back 145 million years to the time of allosaurus, one of the planet's deadliest hunters of all time. His mission is to catch a dragonfly that baby allosaurus used to hunt and eat. He finds the nest of an allosaurus and watches the babies emerging from eggs and taking their very first steps. But, will he succeed in his mission and make it back to the museum in time?
Andy travels back in time 149 million years, to the time of the ammonites - a kind of mollusc that lived in shoals and swam in the sea. His mission is to find an ammonite shell to replace the one he broke back at the museum. Along the way he witnesses bay turtles hatching and taking their first swim and comes face to face with eustreptospondylus, a swimming dinosaur. But, will Andy succeed before the museum opens?
Andy works at the National Museum in the Dinosaur Gallery with Hatty. After part of an exhibit is damaged or needs replacing, Andy travels back in time to age of Dinosaurs using the Old Museum Clock to find a replacement piece. He encounters many Dinosaurs and other creatures that lived at the same time.