"I Got Fired as a Court Wizard" centers on the protagonist, a skilled and dedicated court wizard who serves a kingdom with unwavering loyalty. Despite his expertise and contributions to the kingdom's prosperity, he is abruptly dismissed from his position due to political intrigue and the machinations of envious nobles. The dismissal is framed as a result of false accusations, leaving the wizard disillusioned and stripped of his status.

Forced to leave the royal court, the protagonist embarks on a journey to rebuild his life outside the confines of the kingdom. Along the way, he encounters various individuals who challenge his perceptions and help him rediscover his purpose. These include a resourceful merchant, a rogue adventurer, and a young orphan with latent magical abilities. Together, they form an unlikely group, navigating a world filled with magical creatures, ancient ruins, and hidden dangers.

As the story progresses, the former court wizard uncovers a conspiracy that threatens not only the kingdom he once served but the entire continent. This revelation forces him to confront his past and reconcile his feelings of betrayal with his sense of duty. The narrative explores themes of resilience, redemption, and the complexities of loyalty, as the protagonist balances his desire for a peaceful life with the responsibility to protect others.

The manga blends elements of fantasy, adventure, and political intrigue, with a focus on character development and world-building. The protagonist's growth from a disgraced official to a self-reliant and compassionate figure forms the core of the story, supported by a diverse cast of characters who each contribute to the unfolding plot. The series maintains a steady pace, balancing action sequences with moments of introspection and interpersonal dynamics.