Six months after reuniting Nemo with his father, Dory suddenly recalls several childhood memories. Setting out with Marlin and Nemo, she travels to find her family. She makes several new friends along her way to reunite with her forgotten parents.
David Attenborough and team explore the Great Barrier Reef 60 years after his first visit. The reef is now threatened and he is determined to discover how to save it. He travels from the Australian Institute of Marine Science to the deep of the reef.