In this unique new survival program format, 45 male trainees will enter an extreme outdoor bootcamp, where they must survive rigorous physical training and reach the "top of the food pyramid" in order to earn a chance at debuting. The show will give birth to a new type of "wild idol" group through a never-before-seen survival contest.

Kim Jong-kook
Self

Lee Sun-bin
Self

Lee Hyun-yi
Self
Kim Sung Gyu
Self

Cha Tae-hyun
Self

Nam Yu-jeong
Self

Yerin
Self

Lee Jae-jun
Self - Contestant

Cha Sun-hyung
Self - Contestant
Fear Factor75%
I-LAND83%
The Voice59%
Australian Survivor81%
Naked and Afraid68%
Naked and Afraid XL72%
The Voice UK61%
Running Wild with Bear Grylls68%
The Challenge71%
Squid Game: The Challenge65%
Temptation Island68%
Top of the Pops66%
Beat Bobby Flay61%
BTS In the SOOP85%
Physical: 10076%
Survivor73%
Run BTS!86%
Glow Up: Britain's Next Make-Up Star67%
Naked and Afraid of Love63%
Dating Naked UK82%