The themes of individuality, sharing, and sibling rivalry come to a head when three otter siblings choose the same rock to play with.

For an otter, a rock has many uses. It can be a tool to break shells for food, an entertaining toy, or even just something to admire. Choosing a rock is a very important decision. Many otters will carry their rock with them their entire lives, safely stored in a small pouch under their arms. But what happens when three otter siblings choose the same rock?

This is a story of three otter siblings who are hunting for their perfect rock. They usually do everything together, so this proves a difficult challenge. Then, when they all pick the same rock, they must decide who deserves to keep it.