Twenty-two Challenge All Stars return for a second chance at the ultimate competition and a $500,000 grand prize.
Reunited in the house, two best friends clash, reopening decades-old wounds that threaten their relationship.
An infamous ice-cold throwback challenge leaves some players in a compromising position; years-old tensions arise between two all-star competitors.
The All Stars brace for impact as someone in power threatens to use the Lifesaver; a parent feels torn about being away.
A grueling challenge leaves one All Star blaming another for his or her poor performance; an unexpected new romance blooms.