Ollie, Bea, and Ula do everything together. They play in the waves, eat shellfish feasts and snuggle up together to sleep. But there comes a day when every young otter must find a special rock of their very own -- one shiny and strong enough to crack open shells for themselves. What will happen when there's just one perfect rock and three eager otters? This heart-warming tale from Sarah Noble touches on sibling rivalry, familial love and finding your independence.