In this gripping drama, Carla Nowak (Leonie Benesch) begins her tenure as a dedicated sports and math teacher at a high school, bringing with her a sense of idealism and commitment. When a series of thefts occur and one of her students is suspected, Carla takes it upon herself to uncover the truth. Her investigation leads her to confrontations with colleagues, parents, and students, revealing deep-seated issues within the school system. As tensions escalate, Carla's determination to do what's right threatens to unravel her career and well-being.