A group of couples think they are taking part in a competition to test their relationships, but there are liars among them looking to swindle the real couples out of a cash prize worth over $100,000.

The couples have $25,000 in the prize pot after voting off a pair of liars at the first Truth Ceremony; suspicions ride high among the group and investigations intensify; a secret alliance forms.

As the couples settle into the competition, relationships are tested further and possible mistakes are made.

The new couples settle into the group and start to spice things up; Tori leads a challenge that reveals flaws in backstories, and suspicions grow even bigger; for one couple, it gets too much and they decide to leave.

A divide within the group forms between the original couples and new arrivals, but despite the continuing investigations and raised suspicions, the prize pot is the same as day one and frustrations start to build.

Tori throws the group a much needed lifeline with a side pot worth $50,000 which means there's $75,000 up for grabs at the Truth Ceremony. But, the pressure of the game gets too intense for one couple who split up as a result.