The latest episode of "Glee" featured one couple's baby mania and a rivalry reaching its boiling point. 

In "Trio," Tina (Jenna Ushkowitz), Blaine (Darren Criss) and Sam (Chord Overstreet) decide to make some lasting memories before graduation by spending a night locked inside McKinley. At one point, Tina and Sam kiss, which causes Blaine to freak out, saying senior year is already "so weird."

In the end, everyone reconciles, and the trio, in addition to Artie (Kevin McHale), sing a rendition of Wilson Phillips' "Hold On."

Mr. Schue (Matthew Morrison) stresses out Emma (Jayma Mays) by making an appointment with a fertility doctor, even though they haven't been trying to get pregnant for very long. Sue (Jane Lynch) tells Schue to back off, and to make Emma feel relaxed.

Emma and Schue paint a nursery and spend some quality alone time together, which involved watching the movie "Ever After." Not long after, Emma cancels her trip to Nationals because she's pregnant.

In New York City, Rachel (Lea Michele) takes advantage of Elliot's (Adam Lambert) hospitality by moving in and turning him into her gay personal assistant. This leads to Santana (Naya Rivera) getting jealous and trying to claim Elliot as her own best friend.

The rivalry gets so tense that Kurt (Chris Colfer), Elliot and Dani (Demi Lovato) kick Rachel and Santana out of the Pamela Lansburys, and refuse to work with them until they stop their constant fighting.

Rachel and Santana finally put aside their rivalry for a night to attend the debut of the new group, "One Three Hill."

Later, both of them admit to not having many close female friends, and finally reconcile.

On the next episode, "City of Angels," "The members of New Directions travel to sunny Los Angeles to compete in Nationals, and bring with them two very special guests. "

Finn's memory will be a significant presence in the next episode. The New Directions will dedicate their performance to their late friend, and Burt (Mike O'Malley) and Carol (Romy Rosemont), presumably the "special guests," will also fly out to L.A. for the performance.

Watch the promo below for "City of Angels," which airs Tuesday, March 11 at 8 p.m. EST on Fox.

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