It is late in the afternoon and Nanna Rosa has called Baby Tom and Scout in for their bath. Dad is finishing a cubby house for Baby Tom, Scout and Zero in their back garden. They are almost finished, but when Dad has run out of nails he decides to hurry up the road and buy some more before the day ends. Where did Baby Tom go? Why is Zero barking so loudly? Baby Tom soon learns that the driveway can be a dangerous place to play….and that Dad and Nanna Rosa love them very much.