What if you could communicate with a whale? Rio has been sent to live with a grandmother he barely knows in California, while his mum is in hospital back home. Alone and adrift, the only thing that makes him smile is joining his new friend Marina on her dad's whale watching trips. That is until an incredible encounter with White Beak, a gentle giant of the sea changes everything. But when White Beak goes missing, Rio must set out on a desperate quest to find his whale and somehow save his mum.