The balance of power shifts as Vienna and Kasey's control of the Pad begins to unravel and Jake gains some allies. Meanwhile, Melissa grows furious with Blake, and Michael and Holly - who were once engaged - share what could be a defining moment in their relationship. In this week's challenge, the contestants will showcase their rock-hard abs and sexy curves as they take to the pool in a must-see synchronized swimming event. Alas, when all the fun and games are over, someone must leave the Pad in what will be the closest rose ceremony yet.