KellyAnne Judd

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.

Host TJ Lavin brings together the decorated Challenge Legends and the Global MVPs from Argentina, Australia, the UK, and the U.S.A. for a groundbreaking and grueling new competition.

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; the rivals are faced with one of their greatest fears: heights.

The fight for $500,000 and the title of Challenge World Champion is on as teams push themselves to their limits across the South African countryside in their most brutal test yet.

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