The couples spend time getting to know each other and for some, the instant chemistry deepens, while others struggle to form a connection. Each couple receives keys to a honeymoon suite and must decide to move in together, or go home alone. One scorned single returns to the island to break up a happy couple in hopes of a second chance.

To understand the psychology of relationships, the couples are asked to talk about their pasts. For one person, the stress of this accelerated process leads to a major breakdown. A surprise visitor arrives to the island, which may change the course of one couples' relationship forever.

Halfway through their time on Honeymoon Island, the guys confess to Jona they are worried that Brandin is leading him on. Kimber and Shannon struggle to see eye to eye on a potential relationship deal breaker. After an intense group relay race, one couple's ridiculous fight spins out of control.