Jeongyeon is a girl who had many problems with her life, that's why she's been so cold to many people, well she's the CEO of the TWICE Entertainment, so she's always stressed. While Nayeon, she's just living with the best of her life, no problems, and now graduated 10 years ago, and applied for a job, but this time, she had one problem with the ONCE Pop Company, her old company. Her boss fired her because of the wrong and lame works she had. So Nayeon had to apply for a new job now. When the two girls met each other at the same company, something came between them two. But a boy named "Hyunjin" is an enemy of Jeongyeon that likes to ruin everything.