Four couples are given an opportunity to bring a third love into their relationship as they meet, mingle and date a whole host of singles before deciding if they want to become Throuples.
Having engaged in a jealousy relationship session, the four Throuples participate in their first "Stay or Swap" ceremony; as some Throuples strengthen, others fizzle out.
Core values tested when open conversations cause awkwardness between Throuples. Further relationship challenges arise upon new couple's prying intentions.
As the resort's newest couple explores their options, the Throuples engage in an honesty session, solidifying some but raising questions for others; at the next "Stay or Swap" ceremony, big decisions are made by all.
After a dramatic couple of days at the resort, the Throuples take part in a game to bring the fun back to their relationships; when things don't go as planned for everyone, a "Stay or Swap" ceremony brings major consequences.
As some Throuples question their relationships, a game night sees inhibitions cast aside; with the end of the experiment looming, the couples go on dates to clear up unfinished business.
As the experiment into Throupledom comes to an end, there's just one final decision to make as the relationships face the ultimate question of commitment.
