For Hugo, after transmigrating into the world of Harry Potter, a novel from his previous life, he faces a new identity, new knowledge, and a magical world that is likely to erupt into war. Worse still, his identity means he is destined to be unable to escape this fate. Fortunately, he knows the plot and what his future should be. Even better, he discovers that he has obtained a certain ancient ship girl game from his previous life's phone as a golden finger, which not only enhances himself but also allows him to summon those ship girls to his side.