All 25 episodes from Series 1. Andy is back at the National Museum, and with the help of his trusty old time-travelling grandfather clock he s about to set off on an epic journey to visit the dinosaurs and the ice age beasts that once roamed our planet. Helped by his new, tech-savvy assistant Jen and hindered by the accident-prone Janitor, Andy s adventures stretch across 170 million years of pre-history. Andy comes face to face with ferocious predators, such as the carnivorous Spinosaurus, bigger than a T-Rex; and meets the mighty Argentinosaurus, a 30-metre-long giant, one of largest animals ever to have walked on land. But this time it s not just dinosaurs on Andy s sightseeing list: there are also the weird and wonderful beasts that followed in their footsteps Woolly Mammoths, Sabre Toothed Cats, even our very own ancient relatives, the Neanderthals.