Dory (voiced by Ellen DeGeneres) is a wide-eyed, blue tang fish who suffers from memory loss. The one thing she can remember is that she was separated from her parents as a child. With help from her friends, Nemo and Marlin, Dory embarks on an epic adventure to find them. Her journey brings her to the Marine Life Institute, a conservation centre that keeps fishes in captivity. Dory comes to realise that her longed-for family reunion will only happen if she can save mom and dad from their prison.