Nathan plays at the bottom of the garden to get away from his family when he finds a magical dinodoor and travels back to the Jurassic. He meets a young diplodocus called Timmy who likes to play away from the herd. While playing hide and seek, some Allosaurus come and ask to play. Nathan asks them to count and then they run back to the herd. Timmy is slow, but Nathan gets the bigger diplodocus to help. Both Nathan and Timmy learn the importance of staying close to their family. Nathan goes home to see his family.

A simple reading book for young children and early readers, with full colour illustrations