A source close to the situation explained:
Drama Arises As Rachel & Kurt Go At It In Glee's Next Episode! But What Sends Someone To The Hospital?!
What. Is. Going. On. Here?!
Santana isn't around and this upcoming episode just REEKS of dramz!
With the Gleeks getting into disagreements and arguments with some of their closest friends, the promo ends in sadness as we find Mercedes, Blaine, Rachel, Sam, and Artie crowding around a hospital bed that Kurt is possibly lying in.
This is certainly going to be the longest week ever. Take a look at the promo (above)!