Spoiler alert: Rachel does some meddling in tonight's episode. We know — shocker, right?! Rachel, on a mission to tell Finn that he is not the father of Quinn's baby, tries to hint to the glee kids that Puck is actually the father with the hope that they'll tell Finn, but they already know and conspire to keep Rachel from telling Finn. Rachel tells Quinn that babies of Jewish parentage are at risk for a horrible genetic disorder, with the hope that Quinn will talk to Puck about it. At least she didn't make up a disease that affects babies of mohawked parents.

Will introduces Emma as the new glee club supervisor and receives an underwhelming response from the kids, who must now come up with their set list for Sectionals on their own.

Rachel offers to do the ballad, but Mercedes says she's sick of Rachel hogging the spotlight when she works just as hard as her. Mercedes proceeds to perform "And I Am Telling You I’m Not Going," absolutely killing it, and Rachel concedes that Mercedes should perform the ballad. Woah, is that Rachel showing some humility? Never thought we’d see that.

After class, Finn tells Rachel that if they win Sectionals everything will be good for awhile. Rachel agrees — then proceeds to tell Finn that Puck is the father of Quinn's baby. Finn, who is now livid, attacks Puck, breaks up with Quinn, and quits glee. Could that have possibly gone any worse?

Rachel apologizes to Quinn and says that she just wanted Finn to be hers. Quinn says she's not mad, but wants everyone to leave her alone, including Puck, who confesses he wants to be with her and raise the baby. Talk about too little, too late.

The glee kids — minus Finn — arrive at Sectionals and are shocked when the other two teams perform all of their numbers. Will confronts Sue about leaking the set list and she laughs that this is the end of glee once and for all. We're starting to get the sense that Sue may not be the nicest person in the world. Who's with us?

The kids scramble to put together a new routine, and are saved when Finn shows up with a song for the final number. Rachel begins with a show-stopping rendition of "Don't Rain on My Parade," followed by the entire New Directions team performing "You Can't Always Get What You Want." Finn saves the day!

While the not-so-qualified judges deliberate, the Jane Addams squad coach confesses to cheating and apologizes to the kids. However, it's too late, as the judges have already made their decision. Cue the drum roll...

When Will goes home to change for Emma and Ken's wedding, Terri confronts him and says that she knows she made a mistake and she's getting help. Will says it's too late and leaves her. Finally! Somebody grew a pair!

Will arrives at the wedding reception to find Emma sitting alone in her dress. She tells him that her postponing the wedding for Sectionals was the last straw and that Ken had dumped her. Looks like he was capable of growing a pair, too. Will apologizes, but Emma says that Ken's right; she was settling for him because she couldn't have Will. She also sent in her resignation to Figgins and will be leaving McKinley because it's too hard to be around Ken. Will tells her he just left his wife, but Emma feels like it's just too late. What?! No! She can't do this to us!

Figgins meets with Sue and fires her from the Cheerios for sabotaging glee club. She concedes this round to Will, but promises to come back in fighting form. Was there ever a doubt?

The glee kids show Will their winning trophy and perform "My Life Would Suck Without You" for him since he couldn't see them perform at Sectionals. Great ending, right? Sure, until this happens: Will confronts Emma and — YES! — kisses her.  Best. Ending. Ever.

Music:

1. And I Am Telling You (I'm Not Going) — from Dreamgirls (opened on Broadway in 1981)/ Jennifer Hudson sings "And I Am Telling You" in the 2006 film version of the musical.
Mercedes
2. Don't Rain on My Parade — from Funny Girl (opened on Broadway in 1964)/ Barbara Streisand sings "Don't Rain on My Parade" in the 1968 film version of the musical.
Rachel Berry
3. You Can't Always Get What You Want — The Rolling Stones (1969)/ Album: Let It Bleed
New Directions
4. My Life Would Suck Without You — Kelly Clarkson (2009)/ Album: All I Ever Wanted
New Directions (to Will Schuester)