Following a childhood tragedy, Dewey Cox follows a long and winding road to music stardom. Dewey perseveres through changing musical styles, an addiction to nearly every drug known and bouts of uncontrollable rage.
John C. Reilly
as Dewey Cox
Jenna Fischer
as Darlene Madison
Raymond J. Barry
as Pa Cox
Kristen Wiig
as Edith
Tim Meadows
as Sam
Harold Ramis
as L'Chaim
Margo Martindale
as Ma Cox
Chris Parnell
as Theo
Matt Besser
as Dave
Nat Faxon
as Awards Show Stage Manager
Conner Rayburn
as Dewey Age 8
Chip Hormess
as Nate
