Saurus St is just like any other street ... except for the dinosaurs. When Jack wishes for his own Tyrannosaurus, he doesn't expect a real live one to turn up in the veggie patch. It's pretty cool, but there's no way he can keep it. It's far too big to hide in the shed, and it's bound to eat one of the neighbours sooner or later. With the help of local whizz kid Toby, Jack builds a time machine and sends the T - rex back to the dinosaur era. But when Toby, Jack and Charlie the dog get sent back to the Cretaceous period too, there's more than one troublesome Tyrannosaur to deal with.