In a modern Korea with a constitutional monarchy, a Chaebol heiress and a powerless prince enter a contract marriage, discovering love and courage as they confront social barriers and personal scars.

Kang David, blinded by ambition and materialism, is a former judge turned dedicated public interest lawyer. Kang David is a legal influencer with a flawless work ethic and a clean-cut image, boasting hundreds of thousands of followers on social media. Just as he is about to embark on a brilliant path to success, he gets caught up in an unexpected incident, steps down from his judgeship, and begins a new chapter as a public interest lawyer in a sunless hallway. Park Gi Ppeum, is a public interest lawyer, who is the complete opposite of Kang David, once she becomes interested in something, dives in deeply—her passion for various hobbies eventually leading her to become a “law enthusiast.” She finds comfort in fulfilling her mission as a lawyer: defending human rights, realizing social justice, and helping good citizens who rely on the beauty of the law. Kang David and Park Ki Bbeum meet as lawyers on the public interest team of the non-profit organization “Pro Bono.” Using the money earned from defending conglomerates, they provide legal aid to victims with nowhere else to turn, striving to realize true justice.

A ridiculous merger at a university brings the computer engineering department and modeling department together. Students from the two departments begin to study together. Kang Min Hak in the modeling department has gained a million social network followers after appearing on a dating program. He has a charm to attract the people around him. Ju Yeon San is the top student in the computer engineering department. She is able to swiftly solve problems, but she has a fatal drawback that even a single error stops her from moving on. She works on her computer all day long and doesn't have interest in dating. At first, Kang Min Hak and Ju Yeon San unexpectedly get involved with each other.