It's about Marlin thinking that his wife, Coral isn't dead. He tries to go find her in New England, UK. But he finds the killer who tried to kill Nemo which is Shredder the Barracuda and unexpectedly, he gets kidnap by a Scientist named Professor Kim Azaria. So it's up to Dory, Nemo, & The Tank Gang to find Marlin and stop Shredder and Kim.
