36 young men gather from around the world to compete for the chance to make their K-pop idol debut. These "Mates" must rely on each other as they face different challenges, but how far will their camaraderie go when ever...
Xiumin
MC
Lim Han-byul
Vocal Coach
Kim Sung-eun
Vocal Coach
Vata
Dance Coach
Ingyoo
Dance Coach
Hanhae
Rap Coach
Solar
Special Judge
Takuma
Contestant / self
Jia Hao
Contestant / self
Bing Fan
Contestant / self
Han Yu-Seop
Contestant / self
Miraku
Contestant / self
Noh Gi-hyeon
Contestant / self
Kim Hak-seong
Contestant / self
Jang Hyun-jun
Contestant / self
Lin
Contestant / self
An xin
Contestant / self
Jeong Hyeon-uk
Contestant / self
Kim Si-on
Contestant / self
Jo Min-jae
Contestant / self
Jeon Jun-pyo
Contestant / self
Seo Yun-deok
Contestant / self
Jung Hyun-jun
Contestant / self
