Lindsay is trying to take her relationship with Stephen to the next level; Paige decides if Perry is the one for her; the housemates learn that Luke is bringing a new girl to the house.
Carl hosts a reception for his mom's virtual wedding; Danielle throws a roller-skating party; the housemates want to throw Kyle a birthday party.
While the cold war between Luke and Hannah shows no signs of warming, Lindsay wonders if she is actually the priority in her relationship with Stephen; the housemates plan a family dinner to get back on track, but it leaves the house divided.
The crew decides to let loose in an all-out mullet extravaganza, the debauchery continues; much to the chagrin of Paige and Amanda, Hannah and Luke reconcile; the real war begins when Kyle calls a house meeting.
Luke thinks a flirtatious flower delivery will get his relationship with Ciara back on track; Stephen attempts to cheer Lindsay up with a romantic birthday dinner; Hannah and Amanda's friendship takes a turn; Carl receives devastating news.
Kyle is enraged to find his housemates have more laid-back plans for their Saturday night; Lindsay finally receives a grand gesture from Stephen; Carl returns from Pittsburgh to find the house in shambles.
Kyle tries to make amends with Hannah; Lindsay grapples with ending her relationship with Stephen; rumors spread like wildfire when Hannah receives an explosive tip from her psychic.
Lindsay and Luke's maybe-not-so-innocent friendship is called into question when Amanda and Paige confront them about the juicy hookup rumor; sparks fly between Ciara and Carl; the guys corner Luke and demand he account for his behavior.
A pub crawl devolves into a serious conflict between the boys, causing Luke to leave the house; Lindsay wonders if she made a mistake when she broke up with Stephen; Kyle surprises Amanda for their two-year engagement anniversary.
With Stravy's return, the house is abuzz about Lindsay's chaotic relationship; Hannah and Danielle take phone relationships to the next level; Luke is blindsided by information about Hannah and Des; Paige questions her relationship with Perry.
Lindsay decides it's time to take her relationship to the next level and make her ring size known; Carl throws a Derby-themed party, complete with a housemates horse race; Hannah finds herself in the hot seat.
It's the final days at the house and to commemorate the end of summer, the housemates throw a wedding-themed party for Kyle and Amanda; Hannah, Paige and Ciara navigate their complicated friendships; Lindsay and Stravy continue their relationship.
Friends share a house together on weekends during a drama-filled summer season in the beach town of Montauk, N.Y., on the eastern-most point of Long Island.