The musical follows Kim Ja-hong, an ordinary man who dies suddenly and must stand trial in the afterlife within forty-nine days, passing through seven courts of hell. He is defended by Jin Gi-han, a public counsel determined to pursue justice for souls who were powerless in life. Meanwhile, Gang-rim, the leader of the three afterlife guardians, tracks a vengeful spirit who escaped judgment, forcing him to break the rule that bans interference in the human world. As the trials unfold, Ja-hong’s hidden past is exposed, testing the balance between punishment and compassion. The work blends courtroom drama, fantasy action, and reflections on guilt, duty, and redemption.