A Hermit Crab finds his very own shell, only to discover that it already comes with an Anemone inside. The Crab doesn’t want to share, however the Anemone quickly shows that he is worth having around. They both happily share until a Bristleworm invites himself to stay too, but he also proves worthy of sharing. As time goes on they all grow and soon fall out with each other. Until the Bristleworm finds the perfect new home for all three and brings them all back together again.