Oh Yoon Seo is a popular actress. She is famous for her beautiful appearance, but her acting is bad. She gets involved in a scandal with the son from a chaebol family. Her acting career declines precipitously. Oh Yoon Seo hears that a famous screenwriter wants her to play the lead female role for a drama series. The character works as a secretary for a lawyer. To gain experience for the role, Oh Yoon Seo is required to work as a lawyer's secretary for a few months. Meanwhile, Kwon Jung Rok is an attorney for a law firm. He is arrogant and cold-hearted. One day, his boss asks Kwon Jung Rok to let actress Oh Yoon Seo work as his secretary for 3 months. He is not happy about the situation, but he has to accept.
Miko is a 20-year-old girl. She is pure, but prone to make mistakes. Since her father, who was a composer, died, she stayed at an orphanage with her twin brother Mio Sakuraba. Now she is at a convent dreaming of becoming a nun. But, one day, a strange man named Mabuchi asks her to join a famous band called A*N*Jell, due to her brother being out of the country. Once she agrees, something bigger than a love triangle starts to evolve, along with other people intertwined to this story.
Yoon Tae In is the leader of the idol group, Luna. He suffers from sleepwalking. To cure his ailment secretly, a fake doctor begins to live with him. In Yoon Joo works as a tour guide. Her dream is to one day buy her own house. She happens to get involved in an incident and begins to live as a fake doctor with the 5 members of Luna: Yoon Tae In, Lee Shin, Kim Yoo Chan, Woo Ga On, and Seo Woo Yeon.
