Ellen DeGeneres , who reprises her role from 2003's Finding Nemo as the forgetful blue fish Dory in the long-awaited sequel, released a new trailer for the movie on her website Wednesday.
After going with Nemo on a class trip to see manta rays migrate back home, she starts getting flashbacks from her own past and she realizes that somewhere in the great big ocean, she has a family - and she wants to find them.
Dory's parents will be voiced by Diane Keaton and Eugene Levy , while Ed O'Neill and Ty Burrell will also dive in as new characters Hank the octopus and Bailey the beluga whale, respectively.