Smooth sailing turns to rocky waters when Simone and Contessa's argument turns ugly in Antigua. Facing increased pressure, Mariah apologizes to Damon for the infidelity rumors she's spread. In order to right last year's wrongs from Couples' Therapy, Heavenly sits on the hot seat. Determined to give back, Jackie volunteers the group for a meaningful Medical Mission as Quad hurls the hurt over Dr. Greg's infidelities out to sea.