A story about a man who has been pointed out as the culprit of a locked-room murder and his lawyer approaching the truth.
Yoo Min-ho is the CEO of an IT company. He becomes a suspect in a murder case that occurred in a sealed room. Yang Shin-ae becomes Yoo Min-Ho's lawyer. She hasn't lost a case yet in her career. Meanwhile, Kim Se-hee is the person who holds the key to the case.
