Dave loves his cave. Inside is decorated EXACTLY the way he likes it. Outside there is a lovely spot for a fire and the grass is always lovely and green. But, Dave is unhappy. What if there might be an even better cave out there? And off he sets in search of a new home. But it turns out that good caves are hard to find. They're either too small, or too big, or too full of bats, until he finds one that looks MUCH more promising. Outside has the perfect space for a fire and the grass is greener than any he's ever seen ... But why does it look so familiar?