Mercedes (Amber Riley) auditions for West Side Story Photo

From: Photo Flash: First Look at GLEE's 'Asian F' Episode, Airing Tuesday!

GLEE follows an optimistic teacher who - against all odds and a malicious cheerleading coach - inspires McKinley High's Glee Club to conquer the world one singing competition at a time. GLEE stars Dianna Agron, Chris Colfer, Jessalyn Gilsig, Jane Lynch, Jayma Mays, Kevin McHale, Lea Michele, Cory Monteith, Matthew Morrison, Amber Riley, Mark Salling and Jenna Ushkowitz. Check out photos from the next episode of GLEE - entitled 'Asian F' - below!