Grover loves living at Cavendish Lane. He has his own bed and lots of toys. It's the best place to relax after a busy day helping his owner, Annie, at the animal shelter. But when a greyhound puppy called Stretch comes to stay, Grover's life is turned upside down. Stretch has a broken leg. He also has lots of energy! Grover tries to help him look after his leg, but that's not so easy when Stretch keeps getting it stuck in strange places . . . What will happen to Stretch? Where will he go?