Kingdom: Legendary War.

Who is the best K-POP performer? Let's throw away all our titles and compete solely through our performances! Here are six K-POP boy groups: the group that ensures your entertainment "BtoB," the idol of the nation "iKON," one-of-a-kind perfect performing group "SF9," group with a strong performance, "THE BOYZ," rising on the global market, "Stray Kids," and a global hot rookie "ATEEZ," who are different in music style and even their debut years. They are gathered here to compete on stage and only on stage. After the missions of recreating their representative songs, covering other groups' songs, and bringing secret weapons, which group will become a legendary group? Bet everything you have and compete to write a new K-POP history! The performance survival show of global K-POP idols.