"Puella Magi Madoka Magica: Wraith Arc" is a manga series that serves as a bridge between the original "Puella Magi Madoka Magica" anime and its sequel film, "Rebellion." The story takes place in a world where the concept of witches has been erased due to Madoka Kaname's transformation into the Law of Cycles. In their place, mysterious entities known as Wraiths now prey on human despair. The narrative centers on Homura Akemi, who continues to fight these Wraiths while grappling with her memories and the lingering consequences of her actions.

Homura, now a magical girl, works alongside Mami Tomoe and Kyoko Sakura to protect Mitakihara City from the Wraiths. However, Homura's memories of Madoka and the events leading to the new world order are fragmented, causing her distress and confusion. As the story progresses, it becomes clear that the Wraiths are drawn to negative emotions, and their presence is tied to the remnants of the old witch system. Homura begins to suspect that her memories are being manipulated, and she struggles to reconcile her current reality with her recollections of Madoka.

The plot intensifies when a mysterious girl named Nagisa Momoe appears, claiming to be a magical girl but exhibiting behavior that suggests a deeper connection to the Wraiths. Nagisa's presence raises questions about the nature of the Wraiths and their relationship to the Law of Cycles. Meanwhile, Homura's internal conflict deepens as she uncovers more about the Wraiths' origins and her own role in the altered world. The story explores themes of memory, identity, and the consequences of rewriting reality, culminating in a confrontation that challenges Homura's understanding of her purpose and her bond with Madoka.

The manga delves into the psychological and emotional struggles of its characters, particularly Homura, as they navigate a world reshaped by Madoka's sacrifice. The narrative maintains a focus on the tension between hope and despair, a central theme of the "Puella Magi Madoka Magica" franchise, while expanding on the lore and setting the stage for the events of "Rebellion." The Wraith Arc provides crucial context for understanding the evolution of the series' world and the motivations of its characters, particularly Homura, whose actions and decisions drive much of the story.