Pontifex Lembrary fights against a devil, he gets transferred to a different world possessing the body of Woo Yeon-woo who is a member of an unpopular idol group called Wild Animal. In an entertainment business where overwhelming social skills, trendiness, and talents are highly necessary, it is hard for solemn, holy Lembrary to adapt. Due to his inappropriate says and dos as a celebrity, Lembrary is talked about from the public and receives attention that he did not expect. Using his goodness and love, Lembrary heals this twisted and barren world people live in while going this way and that way to settle himself as an idol.

It's Goo Ra Ra's big day. Sun Woo Joon catches her off-guard with a memorable first encounter, moments before her world comes crashing down.

Can you actually not show what your true colors are while working with a lot of people? Eun Hwan Ki, the director of the top public relations agency, is a mysterious man known as “The Silent Monster.” No one knows much about him because he always avoids eye contact and appears coldly aloof and arrogant, but in truth he’s an extreme introvert — a PR executive who hates attention and is too shy to be around people. Chae Ro Woon begins to work at Eun Hwan Ki’s company. She is very energetic, the extroverted type and receives recognition for her work, but her only interest is in CEO Eun Hwan Ki. She plans to reveal who Eun Hwan-Ki really is.

Gong Woo-Jin is a 30-year-old single man and he works as a set designer. Due to a trauma he experienced 13 years ago, he does not want to have a relationship with others. When Woo Seo-Ri was 17, she fell into a coma. 13 years later, she wakes up from her coma. Her mental age is still that of a 17-year-old, but she is now 30-years-old. Gong Woo-Jin and Woo Seo-Ri get involved with each other and fall in love.

The series follows the story of the long-term guests at Paradise Inn, located in the heart of Seoul. From the first room to the sixth room, all the guests are different in age, gender, and even where they grew up.

Son Ji Eun moves to a small city due to her husband's new job as a civil servant. She works part-time at a mart. Son Ji Eun is quiet and sincere. Her life in the small city becomes boring. Son Ji Eun's life is shaken by Yoon Jung Woo. Yoon Jung Woo is a biology teacher at a local school.

It is a love story of Han Se-gye (Seo Hyun-jin) who is an A-list actress. She is known as a troublemaker and the object of many rumors. Her life is a mystery, but, in reality, she suffers from an unusual phenomenon. At a certain point every month, her appearance changes to a different person. She lives one week out of every month with a different appearance, and Seo Do-jae (Lee Min-ki) who is an executive director of an airline company. He seems perfect with an attractive appearance and intelligence but, he suffers from prosopagnosia. He hides this disability and tries hard to memorize people by their habits and mannerisms. The only face that he is able to recognize is Han Se-gye’s.

Do Hyun-Woo has worked as a PD for the past 10 years. He learns that his wife is having an affair and doesn't know what to do. Do Hyun-Woo, who tries to protect his marriage, talks with anonymous people through online social networks.

Yoo-Seul is a student of an art high school. She is a talented pianist and who won various contests, but she is driven by her mother. Yoo-Seul's mother wanted to become a pianist when she was younger. One day, Yoo-Seul has an accident. Yoo-Seul may never play the again because of the accident. With the help of her friend Cha-Sik and Yoo-Seul's rival Jin-Mok, Yoo-Seul begins to live a new life.