Once-in-a-millennium handsome trainee, On Ha-je, vows never to set foot in the entertainment industry again after rejecting a sponsor’s offer and losing his debut opportunity.That’s, until he is sucked into an idol training game.Between finding hidden talents and growing as an idol, dealing with a stubborn system, and solving the past of the character he embodies, he finds himself struggling with no money, no home, and no knowledge.But he exclaims, “This is a big deal. It’s fun!”He takes on challenges, pushes forward, and conquers them all. This is the story of the genius idol, On Ha-je, who isn’t just a handsome face, but a multi-talented individual.