Five 90 Day couples arrive at a paradise retreat for intensive therapy. Infidelity shakes Kalani and Asuelu's world. Angela threatens divorce. Yara confronts her nemesis. Ed and Liz want to move beyond their breakup cycle. Molly and Kelly try to heal.

A blindfolded obstacle course puts relationships to the test. Angela communicates better with another man than with Michael. Yara reveals a secret she's been keeping from Jovi. Ed gets called out for cheating during a trust-based challenge.

Liz triggers Angela, who ends up having to discuss her anger issues with Dr. Janie. Yara's romantic gesture ends with a drunken debacle. Liz and Ed struggle to communicate. Kalani and Asuelu take a shaky step forward. Molly and Kelly fall into old habits.

Sex therapy exposes the couples' intimate vulnerabilities. Angela and Michael find a new way to enjoy their long distance relationship. Jovi and Yara struggle to get on the same page. Molly and Kelly seem to reach an impasse.

The couples talk about failing and succeeding at their sex therapy homework. Jovi plans a surprising experience for Asuelu. Angela scares Kalani and Yara with what's hidden in her swimsuit. Ed discovers who he was in a past life.

Kalani, Yara, Angela and Liz bond at a lingerie party, and Yara talks about her insecurities. Ed demonstrates one of his intimate skills. Kama Sutra therapy pushes one couple to their breaking point. Kalani reveals why she can't forgive Asuelu.

Past lives reveal present issues for Ed and Liz. A pool party brings one couple closer together and tears another couple apart. Michael and Angela both break down in therapy.

Family therapy exposes Kalani and Asuelu's secrets. Molly and Kelly reach an impasse. Jovi and Yara discuss their intimacy. Angela surprises Michael for their anniversary. Ed reveals a secret that puts Liz in a tough position.

Family therapy reveals that Yara isn't the only one keeping secrets. The couples find out what Molly has been up to. Kalani's absence has Asuelu freaking out. The girls find out the truth about Kalani.

Kalani comes clean to the girls about her night off the resort. Jovi and Ed bring Asuelu to his first strip club and get Michael in trouble. Jovi's actions have Yara questioning their relationship.

Kalani tells Asuelu the truth about her night off the resort. A sunset cruise causes setbacks for multiple couples just a day before the commitment ceremony. Ed tells Yara about a text Jovi sent. A fight breaks out on the high seas.

Fallout from the strip club and the boat threatens relationships on the eve of the commitment ceremony. The final group session reveals further setbacks. The couples decide whether to recommit or separate as the retreat comes to an end.