It's time for the big trip to the Big Sandy Desert, and everyone is excited except Hobart - who wants to spend some time on his own. However, the Numpups persuade him to come along so he can judge their sandcastle competition. At the last minute Hobart realises he has forgotten his megaphone, so he goes back to find it and the others leave without him. When Hobart realises they have gone, he decides he can have some time on his own after all - but he manages to get tangled up in his hammock. Meanwhile, back in the Big Sandy Desert, the Numpups look around for Hobart to judge their sandcastle competition and realise he isn't with them. They hear his cries for help, and everyone races back to rescue him.