Martha the mammoth and her prehistoric animal friends are playing happily together in the wood when Martha discovers a baby woolly rhino called Ryan who has lost him mum and dad. While Martha and her friends look after the baby rhino, Bella the butterfly sets off in search of Ryan's parents.
The fear of getting lost is one readers of this age will readily relate to and the way the young animals look after the baby rhino and imaginatively solve the problem will delight and amuse children.