Ashley's life is turned upside down when her mother is killed in a car accident. Leaving her hometown in Canada, she is forced to move back to Australia with her father whom she hasn't seen since her parents split when she was five. As much as she wants to leave and return to Canada, Ashley decides to stay when she meets Ryan who is protecting a Bottlenose dolphin abandoned by its mother. Ryan and Ashley, as well as his family, does everything they can do to protect Cleo and other dolphins from Japanese whalers who are due to past by the bay in any day now. But it isn't easy to protect them when a girl from their school has a father who is a whaler. And when she tells her father about Cleo, Ashley, Ryan and his sister finds themselves out at sea to stop the whalers.