The final eight compete for the $300,000 prize pool, where old rivals face off and new relationships prove crucial as fallen players give their stars away. An All-Star makes a heartbreaking mistake that could cost them the entire game.

Friends on opposite alliances have their relationship put to the test as the game gets serious. The All-Stars face their fears at an adrenaline-pumping challenge. One player harbors a huge secret from the house.

Two Challenge queens seize the opportunity to go after a knight fiercely defending their star. One All-Star confides in an old rival as relationship woes threaten to take over their game. An explosive nominations sends shockwaves through the house.

Rivals Aneesa and Ashley attempt to get back in sync after their blow up; Katie tries to school rivals Adam and Steve on playing a more aggressive game; the pressure is on to free up a star, tempting the winning team to make a big move.

Reunited in the house, two best friends clash, reopening decades-old wounds that threaten their relationship. One player's nervous mistake could cost them the game during a high-flying trivia challenge.

Accusations fly as several rival pairs try to figure out who is controlling the game behind the scenes; Shane targets an alliance member that he feels is threatening his position in the game and friendship with his long-time BFF, Veronica.

Twenty-two Challenge All Stars return for a second chance at the ultimate competition and a $500,000 grand prize. Right out the gate, the competition gets real with an intense underwater challenge. An honest player struggles with the game's politics.

Nany worries that Turbo's attitude around the house paints a bigger target on their backs; Adam begins to question one of his alliance members; Veronica continues to take issue with her BFF Shane's lack of allegiance to her side of the house.

Emotions run high as the final draws to a close, and the final four rival pairs continue to fight for the last remaining stars; at the finish line, an unprecedented twist on a controversial decision raises the stakes for the winning rival pair.

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A group of twenty-six competitors are paired up with their enemy from seasons past; as bad blood resurfaces for some, the Rivals quickly learn that to win their share of the $300,000 grand prize, they must be able to work together to survive.

A star is up for grabs, and the six rival pairs without one fight tooth and nail in the first-ever Star Challenge for their ticket to the final; an unexpected outcome from the daily challenge causes the house to scramble like never before.

An infamous ice cold throwback challenge leaves some players in a compromising position. Years-old tensions between two all-stars boil over in an explosive argument, while two new allies mix business with pleasure.

A surprise twist from TJ changes the entire game. A former champion must test his resolve against an intimidating opponent. An All-Star conquers a fear only to have their season thrown into jeopardy.

The game reaches a fever pitch as the All-Stars scramble to survive the last challenge before the Final. A moment of rage puts a power player's season in jeopardy. An injury could cost one pair their shot at redemption.

A power move backfires in spectacular fashion. A top veteran's losing streak puts their alliance in danger when an enemy gains control of the vote. Ex-lovers give in to their chemistry, but one party instantly regrets it.

With the four coveted stars claimed, the nine remaining rival pairs without a star are left to figure out how to take possession of one for themselves; at the next challenge, the Rivals are faced with one of their greatest fears: heights.

Tension continues to brew between rivals Kelly Anne and Sylvia; Adam puts himself and his partner Steve's star at risk after coming down with a flu; at the challenge, another Rival pair is divided, leading to big misunderstanding back at the house.

TJ puts a rivals spin on his favorite challenge of the season: trivia; tempers flare between two rival pairs when one challenger is caught supporting a strategy to throw in their real life best friend into the Jungle for possible elimination.

A rival pair seeks revenge to take back their star from one of the four star holding pairs after it was stolen in the previous elimination; one challenger threatens to quit the game when tension with their rival reaches an all-time high.

The final four rival pairs compete in the Final Challenge; with a life-changing amount of money on the line, some rival pairs struggle to excel past their differences, while others fully regress back into their old ways with each other.

The All Stars brace for impact as someone in power threatens to use the Lifesaver. A parent is torn between being away from their family and their shot at becoming a champion. An introverted player delivers a blistering message.

Twenty-four Challenge All-Stars are reunited in Cancun to face their past and pursue a $500,000 grand prize. An old rivalry flares up between two power players. TJ shocks everyone with an unexpected twist.

A Challenge icon fears the repercussions when a former enemy lands in a position of power. A poor performance at a high-flying challenge leaves one All-Star fearing their shot at redemption will be cut short. A much-loved player faces a shocking betrayal.

The game gets real when a pot-stirring player pushes another to question their desire to stay in the game. Warring exes wonder if they should resolve their differences in the Arena. An old-school player teaches a fledgling All Star a valuable lesson.