More surprises will come to McKinley High in an upcoming episode of "Glee" with the return of Idina Menzel's Shelby Corcoran, who will take a teaching post at the school. Will happily welcomes her, but Quinn doesn't.
Quinn, who still sports pink hair, is concerned that Shelby only returns to remind her about the baby she gave up for adoption. Shelby admits that she wants the former cheerleading squad captain to become part of the baby's life, but not with her current wild look.
Meanwhile, Mr. Schuester initiates a boot camp for some of the members of New Directions. Kurt is auditioning for the school play and his father offers a suggestion which combines Dianna Ross and magic chocolate factory.
"I Am Unicorn" will air next Tuesday, September 27 at 8/7c on FOX.