Story details about the upcoming sequel to Finding Nemo, Finding Dory , were revealed during Disney's D23 event today, along with one new casting announcement - Ed O'Neill (Married, With Children/Modern Family) will play an octopus named Hank.

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Andrew Stanton is back as director and said he initially didn't think there would be a follow-up to Finding Nemo... until he began to think about the question of who Dory's family was and where she came from.Footage debuted today at the D23 Expo showed how the plot revolves around Dory searching for her family, after she begins to mention them in her sleep and have flashes of memory -- yes, having any memories shocks her -- about them. Nemo overhears Dory say "the jewel of Monterrey, California," and they realize that is there where Dory's parents are.Of course, Dory immediately tries to look for them, only to be stopped by Marlin. However, Marlin relents and helps Dory after stopping to think about the strong desire he had to find Nemo, which drove the plot and title of the original film. During the footage, they discuss how far away California is and Dory asks Marlin if he can get here there and he replies, "No, but I know a guy."Somewhere along the way on her journey, Dory finds herself trapped inside the state of the art Marine Life Institute without her clownfish companions, where she meets Hank, the octopus played by O'Neill, along with Ty Burrell's beluga whale and Kaitlin Olsen's whale shark 'Destiny.' Finding Dory was first announced way back in 2013 and is a direct sequel to the 2003 Finding Nemo, set six months later. Original stars Ellen DeGeneres (Dory) and Albert Brooks (Marlin) are back, though young Hayden Rolence takes over as Nemo - given Alexander Gould is now an adult and can't exactly pull off Nemo's voice any longer.Other big Disney announcements today include a new film based on Jack and the Beanstalk called Gigantic . Additionally, a new poster for The Incredibles 2 and Toy Story 4 were shown off.

Seth Macy is a freelance writer who just wants to be your friend. Follow him on Twitter @sethmacy , and MyIGN at sethgmacy , or check out Seth Macy's YouTube channel.