Maci is hesitant to get Taylor a dirt bike for his birthday, Cheyenne is annoyed by the timing of Cory's vacation, and Amber and Gary discuss treating Leah's panic attacks.
Perez Hilton and Lay Lay team up with the Black Squad to take on Nick and the Red Squad in So Petty, Got Damned, Outgoing Message and Wildstyle, and JID performs.
Returning champ Swizz Beatz joins the Black Squad to take on Nick's Red Squad in Pick Up & Kill It, Remix, Wildstyle and more, and Swizz performs his song "SWIZZMONTANA."
During a trip to upstate New York, Angelina and Deena clash over beds, Ronnie reveals that his girlfriend Jen might be pregnant, and Jenni refuses to discuss her divorce.
Mike gets sentenced to eight months in prison for tax evasion, Ronnie raises eyebrows with a story about getting mugged, and the gang heads to a dude ranch.
Justin opens up to Max about his fear of getting too close too fast, an impromptu orgy shakes things up, and Jenna and Kai have a hard time exploring other options.
Nev and co-host Tallulah Willis set out to help Taylor meet a former classmate that she doesn't remember from high school, but something raises Nev's suspicions.
The celebrity singles arrive at the Malibu house, and as sparks begin to fly between the new roommates, exes enter the picture and interrupt their fun.
Brody opens up about his fractured relationships, Heidi and Spencer's business turns personal, and Audrina confronts Justin after he denies kissing her.
Tyler takes a trip to Texas to celebrate his sister's sobriety and contend with his father's relapse, and Amber finds out Leah's been having panic attacks.
Jersey Shore stars Vinny and Ronnie join the Black Squad to face Nick and the Red Squad in Remix, Breaking Up Is Hard to Do, Bullspittin' and Wildstyle, and Karol G performs.
Carmella and R-Truth from WWE join the Black Squad to take on Nick and the Red Squad in Turn Up for What, Got Props, Family Reunion and Wildstyle, and SOFI TUKKER performs.
Ronnie claims to have gotten into an altercation in a parking lot, and the roommates gather as Mike receives his criminal sentencing for tax evasion.
As Mike prepares for both a jail sentencing and his wedding, the ladies take his fiancee Lauren to a wedding dress fitting, and Jenni shuts down discussions about her divorce.
Jenna questions her future with Kai, Nour's jealousy shows, the singles meet Dionne Slay when they throw a queer prom, and Jonathan has an eye-opening experience.