This episode airs on June, 8 and you can watch it here on 9.
Watch Glee Season 1 Episode 22 Journey Preview
Several things happen in the first season finale for Glee. The New Directions compete at Regionals after Will and Finn give rousing speeches. Quinn gives birth to her baby. Sue comes through for the glee club in a surprise ending. Rachel and Finn get together (officially and all).