Andy leaps into his time-travelling clock to visit the fearsome sabre-toothed cat, but when his gizmo malfunctions, he is shrunk down to the size of an insect and must escape from a marauding prehistoric dung beetle!

Andy meets the ankylosaur, the armoured tank of the dinosaur world, when he travels back in time 70 million years on a mission to replace a broken museum artefact. On his trip he must contend with two fearsome predators - a giant relative of the T-rex and a sneaky pack of velociraptors.