Seo Je Yi is the star beauty creator who makes content under the name “Next Door Witch J.” She is a smooth talker who isn’t afraid to say what she feels, and that has made her successful as a beauty creator. Lee Woo Bin is the CEO of a cosmetics start-up company. His products get acknowledged by Seo Je Yi, the star beauty creator, but he struggles to get close to her as a person. He is highly intelligent but has zero social skills when it comes to dating.

Lee Tae Kyung is the director of the company MCN, which is an agency that specializes in managing beauty content creators. Tall and handsome, Lee Tae Kyung secretly has a crush on Seo Je Yi as well, making him one side of a love triangle with Lee Woo Bin. Oh Oh Young is another beauty creator who has more than 1 million subscribers. She used to be Seo Je Yi’s idol, but she soon became a troublemaker with “star disease,” demanding special treatment and the quality of her content going down. She is currently Seo Je Yi’s rival.