When Athen boarded a train on his novel's publication day, he never imagined he'd be pulled into the very world he'd hastily written—a sprawling first draft filled with inconsistencies, underdeveloped characters, and recycled tropes he'd planned to fix. A decade of revisions had shaped his story into something publishable, yet the raw version he now inhabited bore little resemblance to his polished final manuscript. Plot holes gaped where he'd left notes to himself. NPCs spouted dialogue he'd scribbled in haste. The setting itself seemed half-finished, waiting for the edits that never came. Trapped as an extra in his own creation, Athen must navigate a narrative designed to be rewritten. With knowledge of the story's trajectory but no control over its execution, he uncovers mysteries about why he's been transmigrated into this imperfect world—and discovers that the line between author and character is far more blurred than he ever anticipated.