Episode Title:A Hard Day's Knight - I, Brobot.Episode Description:A Hard Day's Knight: Phineas, Ferb and Candace visit their grandparents in England and the boys create a Renaissance fair, where Candace ends up in a jousting tournament. Meanwhile, Perry goes undercover at an evil scientists' convention to track down Dr. Doofenshmirtz.
I, Brobot: The boys clone themselves as Phinedroids and Ferbots (robots) so they can get more projects completed. Doofenshmirtz tries using a giant magnet to erase messages he left on his girlfriend's answering machine.