The 12 couples test their strength and swimming ability in the Tow Job challenge, alliances form in the house, and two couples face off in a Rage Cage tug-of-war elimination.

A grueling Main Event challenge brings the competition to a whole new level, sending one couple to the ER and others seeking revenge. Eleven couples remain in the running for $100,000.

The Main Event challenge shakes things up for the ten couples remaining. A "Super Secret Alliance" threatens to alter the balance of power in the house. Emotions run deep when one couple feels they are being unfairly targeted.