When the kids start to show complacency, Will instills some rivalry to fire them up. He divides the glee club into boys against girls for a mash-up competition. The winner gets to choose the song for Sectionals. That sounds like a drama-free idea, right? Right?!

Sue notices Quinn's leg quivering during their cheerleading formation. Quinn claims she's tired from glee club, so Sue decides she must destroy Will in order to get rid of the club. We'd expect nothing less of Sue! She tells Terri that Emma is after her husband, encouraging Terri to apply for the school nurse position even though she has no experience. Terri needs to keep an eye on Will. A nurse with no training? What could possibly go wrong?

Between football practice, glee rehearsal, and a pregnant girlfriend, Finn is exhausted. Puck advises him to go to the school nurse for a nap. Terri, in her new job, gives Finn pseudoephedrine pills to wake him up. She explains that it's "like" a vitamin. A wired Finn returns to the rehearsal room pumped up to work on the mash-up. He gives his new "vitamins" to the other guys, but we're guessing that this "vitamin" has some slightly different effects than just popping a Centrum once a day!

Rachel is insistent that the girls prepare for their mashup, but the others don't feel they need to worry about beating the boys, that is, until they see the boys perform! The guys give an amazing and energized performance of Usher's "Confessions" and Bon Jovi's "It's My Life" for the impartial judge, Emma. Uh-oh. The girls suddenly start to worry about their mash-up.

Ken confides in Terri that he thinks Emma is in love with Will. Desperate, Terri persuades him to propose to Emma. Ken does it. And isn't that the way that every girl dreams of being proposed to?

With the glee girls' confidence low, Kurt lets them know that boys took pills to boost their get-up-and-go. To even the playing field, the girls take the same pills from Terri. They give a high-spirited mash-up performance of Beyonce's "Halo" and Katrina and the Waves' "Walking on Sunshine." Will is oblivious to their newfound energy.

Emma asks Will if she should marry Ken. (Talk about a tough question! You should have chosen "dare," Will!) Later, Terri warns Emma that she has no chance with Will. Emma accepts Ken's proposal. (Okay, so it's not exactly like proposing at the Eiffel Tower, but we suppose that a proposal is a proposal is a proposal.)

Quinn agrees to give Terri her baby. That should be easy to pull off, right?

Rachel and Finn decide to nullify the mash-up competition. When he learns about the pills, Principal Figgins fires Terri. Figgins also appoints Sue as co-director of the glee club. Really, what could go wrong?

Music:

1. It's My Life/Confessions Part II — Bon Jovi (2000) from Crush and Usher (2004) from Confessions
The New Directions boys
2. Halo/Walking on Sunshine — Beyoncé Knowles (2008) from I Am...Sasha Fierce and Katrina and the Waves (1985) from Katrina and the Waves
The New Directions girls