Couple to Throuple follows four curious couples through the world of polyamory as they experiment with bringing a third partner into their relationship. Set at a remote tropical resort, the couples will meet, mingle, and date a group of singles, many of whom are experienced in polyamory. With three times the fun, the feelings, and drama, these relationships are put through the ultimate test to see if they are the perfect match. At the end of their time in paradise, the couples will decide if their hearts have room for more than just "the one" and commit as a throuple, go home as they arrived, or leave separately.