Kim Hyun Soo (Kim Soo Hyun) is an ordinary university student, but is accused of murder due to a sudden mistake. His life spirals into a bottomless abyss. Shin Joong Han (Cha Seung Won) is a third-rate lawyer. He barely managed to pass his bar exam. Shin Joong Han has never been good at anything, but he is the only one trying to help Kim Hyun Soo. Ever since he met Kim Hyun Soo, Shin Joong Han has had to contend with a cruel legal system.