The first of two tribute episodes to the Beatles, with New Directions performing the Fab Four's musical catalog at director Will Schuester's behest. Kurt and Blaine agree to become boyfriends once again, and Blaine is emboldened to ask Kurt to marry him. Rachel's dreams of Broadway seem to be in jeopardy when a "chemistry" audition ends abruptly; Santana gets her a job at the Broadway diner where she works. Artie and Kitty begin dating. Sue Sylvester is made interim principal of McKinley High after she frames Figgins. Kurt says "Yes".