Elite prosecutor Yuuki Nakamura is on the verge of indicting the ruthless president of an IT company for a horrific traffic accident when shadowy forces have him killed to protect the powerful executive. Instead of dying, Yuuki awakens before a goddess who offers him a second chance: travel to a chaotic fantasy world and use the power of law to impose order upon it. Accepting the proposal, Yuuki is granted the skills of a law enforcer and reincarnates into a realm governed by magic, monsters, and medieval politics.

His first assignment is anything but straightforward. Yuuki must defend a legendary dragon charged with murder after the beast incinerated an entire party of heroes with its fiery breath. The trial is stacked against the dragon, the evidence seems open-and-shut, and the public already considers the creature guilty. Using his prosecutor's instincts and the divine legal authority granted by the goddess, Yuuki must dismantle the prosecution's case, uncover the true circumstances behind the dragon's attack, and prove that even a mythical monster deserves a fair trial.

As Yuuki takes on more clients and navigates the labyrinthine legal system of this new world, he faces corrupt nobles, deep-seated prejudice, and powerful figures who see the law as an obstacle rather than a shield. In one notable early arc, he defends a former slave girl whose freedom is threatened by a depraved aristocrat, forcing Yuuki to confront the limits of his power when a verdict alone cannot undo the rot in society. The series weaves courtroom drama with isekai fantasy, exploring themes of justice, redemption, and the question of whether a single guardian of the law can truly change a world that does not want to be saved.