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.
The newly formed Throuples face their first challenge as a threesome, testing boundaries and pushing some relationships to their limits; with questions raised, the unmatched singles return to the resort to get to know everyone a little better.
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.
The Throuples face a test of core values, leading to some open and awkward conversations; the relationships are further tested when a new couple joins the resort intent on getting to know everyone, and nobody is off limits.
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.
Big decisions are made at the latest "Stay or Swap" ceremony, sending shockwaves through the resort; the Throuples' communication skills are put to the test, making one relationship question their place in the experiment.
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 forth 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.
The throuples face their final stay or swap decision, leading to a rift throughout the resort; with emotions running high, the relationships face the ultimate acceptance test when a trip to Panama's old town finds some familiar faces.
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.
