"When the spotlight dims, the true struggle begins." As the lead of a popular idol group, Lee Felix, shines bright with a radiant smile and captivating stage presence. But behind the glamour, a dark reality unfolds. Haunted by the pressures of fame and the weight of his own secrets, Felix finds himself trapped in a desperate battle with his own mind. As his mental health begins to fray, the light that once illuminated his life starts to fade. Will the people around him recognize the signs before it's too late? Will the sunshine be able to overcome the dark clouds? → Don't skip the 'Starting Note'.

Han Jisung, a transferee from Malaysia, dealing with heavy mental disorders, leading to the shut down of his mind, meeting Lee Minho, who has the same facade as him. Will the two ices finally melt down and become pure water? Will they finally be able to accept their true selves and embrace it together?