Andy goes in search of a woolly rhino, travelling back 50,000 years to a snowy, prehistoric mountain range. Can he find the rhino's favourite food and get back to his time-travelling clock before it returns to the museum?

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!