Carol is a 17-year-old teenager, the daughter of a Brazilian dancer and a South Korean, who lives a challenging journey of overcoming, acceptance and self-knowledge after the death of her mother and the abandonment of her father, who decides to return to South Korea. In a conflicting relationship with her ancestry, she denies knowing any topic better than South Korean culture, but her life changes after a unique discovery: her wardrobe is actually a magic portal that connects her room to a group of k-pop of great success at the moment, ACT.

Ju Eun-ho is an unknown announcer with 14 years of experience. She struggles to get the chance to have her name recognized by the public. She also has another personality, Ju Hae-ri, due to a deep wound in her heart. Her alter-ego, Ju Hae-ri, is super positive and works as a parking attendant. Jeong Hyun-oh is Ju Eun-ho's ex-boyfriend; they dated for a long time but broke up. He became a star announcer as soon as he joined the broadcasting station and is the most-liked announcer by the public, but Jeong Hyun-oh also carries a hidden wound in his mind that he has never shown to anyone. Somehow, Ju Eun-ho and Jeong Hyun-oh reunite and help cure each other's wounds.