WWE Superstar John Cena informs the teams of their next challenge, during which they must barricade their shelters and then retrieve their flags from an opposing team's bunker. In this round of evolution, the winner is not only safe from "The Circus," but also gets a visit from a family member, in what proves to be a very special and surprise reunion. With up to a million dollars of prize money at stake, these competitors will work together with only two options: to persevere and win or give up, "ring out" and go home.

Then, the remaining contestants will only have 30 minutes to mentally and physically prepare for the final evolution challenge of the season, when the teams must suspend upside-down above a waterfall and individually make it across a wire, hand-by-hand for the fastest average score. The winning team will earn an advantage as they enter the final circus, which will be the ultimate test of perseverance. Not only will "The Circus" be a more challenging course, but they will also have to run the course twice. The contestants will only have two options: to persevere and win up to one million dollars or give up, "ring out" and go home.