EXCLUSIVE: Christopher Plummer will join Jennifer Garner, Al Pacino, Annette Bening and Bobby Cannavale in Imagine, the film that gets underway July 1 in Los Angeles with Crazy, Stupid, Love scribe Dan Fogelman making his directorial debut. Plummer will take on a role that Michael Caine was going to play before scheduling knocked him out. Pacino plays a 70ish musician still leading the decadent rock n roll life. Plummer will play his manager, who gave him an undelivered letter written to him by a 19-year old John Lennon. It compels him to clean up and reconnect with his estranged son. Since winning the Oscar for Beginners, Plummer has wrapped the Michael Radford-directed Elsa & Fred opposite Shirley MacLaine, and the HBO film Muhammad Ali’s Greatest Fight. Plummer is repped by ICM Partners and Lou Pitt.