One of the most popular TV shows, "Glee," will air its last show on Friday, which features scenes that flash all the way back to 2009 and then flashes forward to the future, E! News reports.

Fans get to see what a very dark place Kurt was in before finding the glee club, which is a nice contrast to where he is now. He was going through some tough times with his dad and at school.

The two-hour finale fills in some of the gaps that fans already know after flashing back to scenes before viewers met the "Glee" kids, according to E! News.

Fox screened the first hour of the season finale, which is sort of a love letter to the fans that have been supporting the show since its first season, at the Paley Festival in Hollywood. There's a sweet scene with the New Directions kids talking about Finn which fills in the gaps of information that fans never knew about.

The season finale also reminds fans that they could celebrate their differences in the world and that they could do anything they put their minds to with a little help from friends.

Lea Michele, who plays Rachel, fell to her knees in tears while shooting the finale, and the last song she sings is "This Time," which Darren Criss wrote for her.

Apparently Lea was the most emotional while shooting the season finale while Jane Lynch was the least.

Last week's episode of "Glee" brought back Jesse St. James who kissed Rachel after sectionals bringing to question if they are really meant to be, HollywoodLife.com reports.

Toward the end of the season finale, it is revealed that Rachel is pregnant but it is not clear who is the father. Is it Sam or Jesse?

The two-hour season finale of "Glee" airs Friday March 20 as the first hour flashes back to 2009 and the second jumps five years into the future.

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