The finals begin in Las Vegas where elite ninjas go head-to-head in high-stakes, side-by-side races. Athletes face 6 obstacles, including Shrinking Steps, Swinging Frames, and the Salmon Ladder.

Hank and Peggy move back to Arlen and struggle to readjust to their old life. Bobby runs into a childhood friend in Dallas.

General Gregor retrieves the Sword of Mars and uses it to take over the country of Caucasylvia, gaining control of their nuclear arsenal. The team must steal the Sword to prevent world calamity.

Jimmy welcomes actor Chris Pratt, actress Rose Byrne, and a performance by mgk.

Stephen welcomes actress Julia Garner and former Labor Secretary Robert Reich.

Leanne sets out to get fit, but temptation is hard to shake - especially after discovering that Carol has a midnight snack of her own.

Iván learns about Helena's dark side. Octavio and El Magic conspire to fool everyone. Claudio faces his captor.

Two Wakandans must choose to complete their mission or defy their homeland and save their world.

When Kat violently interrogates Zweli, Babalwa exploits a weakness to get him off their tail. As the heist day draws closer, Lungile grows suspicious.

The semi-final lineup is now set, but before that let's start with a "Time Auction" challenge!