The ZBZs are having their annual crush party at Dobler's. Ashleigh knocks herself out on the invitations -- that girl can rock a glue gun. She's also totally fixated on The Hotness Monster from Spring Break. She hasn't seen him again, but she IS sleeping with his flip-flop.
Casey's freaking the heck out about Frannie and Evan. She stress-eats, gobbling up anything with empty calories within arm's reach. Ashleigh enables her ... possibly out of fear of Casey going cannibal and munching down on her fingers or something. Casey wants to go vampire on Frannie and chomp her neck (proverbially speaking), but Ashleigh's not having it. Frannie apologizes, but Casey needs to process (meaning: avoid Frannie at all costs).
Rusty's over his Polymer Seminar and believes it's a sign he should move on to another field of study. He's in a funk, going so far as to skip class! Poor kid. Right when Rusty's mulling over his life trajectory, a new R.A. shows up on the Honors Engineering Floor dispensing awkward advice. Later, Rusty kicks it with his Kappa Tau brothers and blows off his school work. Who is this slacker, and what's he done with Rusty? Even Cappie's concerned ... concerned, but bored by Rusty's issues.
Casey runs into a super hot boy named Drew at the job center. Unfortunately, guess what? That's right -- he's Ashleigh's Hotness Monster! The two besties don't pull any punches competing over Hotness/Drew; they trash talk each other to him until he's so uncomfortable he ditches both. Ashleigh gives up on the competition when Drew doesn't even remember her from Spring Break. Aww, don't worry, Ashleigh -- you'll find a man! Turns out Drew's waaay into Casey. The two ditch the party and swap smooches outside the ZBZ house. The moment's ruined when Evan and Frannie appear on the scene, also making out.
Rusty hits his stride when Senior Stockades go down. Senior Stockades are something of a "Geek"-lympics -- the senior science students barricade their rooms with challenging scientific puzzles the undergrads have to solve. Needless to say, this is good times on the Honors Engineering Floor! Rusty digs deep and figures out how to get into his R.A.'s room right past the midnight deadline. Max, the R.A., reminds Rusty why he wanted to be a scientist in the first place. All's well with the polymer science world!
Evan counsels a distressed Frannie that she doesn't need Casey's approval -- and besides, the Big Sis and Lil' Sis were never really friends anyway ... why sweat it? If Casey tries to "bring it" about Frannie dating Casey's ex, she'll just look jealous and petty.
Rebecca's being stalked by fellow CRU students -- and the paparazzi -- because of her Internet escapades (namely, her Spring Break wet T-shirt contest vid) and her father's infidelity scandal. Cappie thinks she should distract herself by taking advantage of her newfound fame -- by getting a sweet parking spot. The pair hoodwink a campus security official into handing over a coveted faculty platinum decal so she can avoid reporters and staring students. It's the usual fun and games, with Cappie cracking jokes and being charming ... until Rebecca gets a call informing her that her parents are getting divorced. In less than stellar but totes typical fashion, Cappie offers to blow apple juice out of his nose to cheer her up. But Rebecca needs some real support, and leaves him in the dust as she stomps off in her Louboutins.
Ultimately, Casey pinpoints her damage -- she's upset with Frannie because she put a guy before their friendship. So she releases Drew back into the dating pool, realizing she was just about to do the same exact thing to Ashleigh. Sisters before misters! The next morning, Casey lays it down on Frannie; they're sisters, but they ain't friends -- and they're not going to be. Frannie betrayed her by dating the man who did Casey so, so wrong! Poor Frannie looks devastated...