Toby is a shy young turtle who has never left his quiet pond. But when his older brother goes missing after chasing a storm, Toby must set out on a brave journey down the River of Dreams. Along the way, he meets a cheerful otter, a wise old heron, and a mysterious talking fish who guides him through magical lands and tricky riddles. Faced with rising rapids, glowing caves, and his own fears, Toby discovers the courage he never knew he had—all for the love of family and the call of adventure.