In the second episode, titled "I Am Unicorn," Idina Menzel returns to the halls of McKinley to sing a duet of "Somewhere" from West Side Story with her daughter, Rachel, and is bringing her adoptive daughter (Quinn and Puck's child), Beth, along. Mr. Schue is going to continue channeling whatever attitude he got from Sue's glitter bomb last week and put the kids through a glee club "bootie" camp. (Hopefully his drill sergeant uniform doesn't include a cammo sweater vest set.) The guys could actually probably use the dance training, though, since there is only one male lead in the West Side Story production they are all auditioning for. And as for the unicorn? Brittany is seen wearing a unicorn horn in promo stills -- enough said.

This season, you can also expect some new students (the Glee Project winners), Finn's struggles with Rachel's post-high school plans, Mike actually singing, less guest stars (or so Ryan Murphy says), and more Lauren Zizes (even though she quit New Directions last week). Oh, and that whole singing and dancing thing, too.

Glee airs tonight at 8 p.m. on Fox.