Just when it felt like it would be smooth sailing for the Shipmates, the Chakra runs into choppy waters. Resident Downsider Bella struggles to find a path to the Topside, as established couples deepen their connections. The arrival of two sexy Shipwreckers offers renewed hope for Jake and Andrew, while putting Lo on the defensive. Andrew faces an emergency on the Downside at the most inconvenient time, while one of the Shipwreckers makes a bold move that threatens to turn the yacht upside down. David and Lo face the ultimate test of their relationship. 

As the Shipmates arrive on shore for their much-anticipated beach outing, they soon realize that this party will be anything but fun in the sun. David's worst nightmare comes true as he's forced to come clean and answer for his behavior. Back on the Chakra, an innocent game of spin the bottle quickly backfires, revealing truths about the Shipmates that threaten to break up the strongest couples. Gabby makes a game-changing announcement which can spell going overboard for multiple Shipmates.