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The Real World: Brooklyn roommates are starting to form their own cliques as Katelynn pushes the limits and Devyn refuses to stay out of anyone's business.
There are more than just seven roommates in this Red Hook house, as the girls discover that there is a family of mice that refuse to leave.
When Devyn isn't avoiding the Brooklyn mice, she's juggling two guys at once who both want to be the only guy in her life. Devyn is engaged to David but is still stringing along Jim who she dated before coming to New York City.
JD, Ryan, and Chet decide to play a prank on Devyn and Sarah using a live rat. The boys bought a rat from the pet store and plan on catching Devyn off guard first.
At the house, Devyn's "semi-fiance" David comes to visit and Devyn works on keeping her two boys straight. Out of all the roommates, Chet is the most upset about Devyn's player ways. Chet finds out Jim's nickname for Devyn and the boys continue to call Devyn by the nickname even thought David is still in the dark about what it means.
After Devyn is puts David on the train back home, JD and Chet executive the rat prank on Devyn. When Devyn is sleeping, the boys sneak into her room and put the rat on her bed. Devyn wakes up Scott to get the mouse out of her bed and the boys hide their laughter as they rejoice in their successful plan.
The next day, Ryan decides he wasn't content with Devyn's reaction to the rat and puts it into Sarah's bed. Sarah goes into her room and first doesn't find the rat but then comes out of her room screaming and refuses to sleep in her bed. Sarah and Devyn start to realize that it's odd that the rats were white instead of brown.
Ryan's girlfriend Belle comes to visit Ryan in Brooklyn and Ryan tells her to keep quiet about the rat prank in front of the girls. Devyn and Sarah start to realize that it could be a prank and start to point fingers at the boys of the house. The girls start to search for the pet rat without the boys knowing but Chet starts to think something is up.
Chet continues to tell Devyn that it's unfair for her to string David along so Devyn makes the decision to tell David that they need to separate.
JD returns the rat to the pet store, but the girls still find where the rat was living in the house and now know it was a prank.
With JD feeling more and more like an outsider, how will he react when the girls confront him about the prank?