A source close to the situation explained:
It marks the return of Glee alums Amber Riley and Harry Shum Jr. as their characters head back to McKinley High.
What’s more? The fate of Blaine and Kurt's relationship hangs in the balance! The Stevie Wonder tribute episode will have the New Directions, former and current, dealing with their own dreams and desires. And it’s time to ask the big questions — maybe even THE question?!
Ch-ch-check out the video (above) for a sneak peek at what’s to come Thursday night!