A famous TV writer's eccentric personality throws Rachel for a loop. Mercedes and Sam deal with pressure as their careers take off. Blaine has his showcase with June.
Trouble erupts on the set when Chad decides to film his life story and casts Selena Gomez, star of `Wizards of Waverly Place', as Sonny. The real Sonny is not amused.
Chad announces he's hosting a hidden camera show, and everyone's worried about getting caught. Tawni convinces Sonny to ignore a movie audition she says is a prank, but it's not.