During the catastrophic tsunami of 2004, a family of hippos was swept out to sea from their home on Sabaki River, in Eastern Kenya.

The sole survivor of the disastor was a baby hippo who was rescued and given the name Owen.

Motherless and alone, Owen is befriended by Mzee, a giant male tortoise at a local nature reserve.

This moving and charming tale is the story of their friendship.