When one man wakes up inside the world of his favorite video game, he finds himself reincarnated not as the hero but as Weiss Hamilton, a doomed minor villain from the prologue who is destined to lose everything. In the original game's narrative, Weiss is a tragic figure overshadowed by his talented sister, stripped of his status as heir, and left to mismanage his territory into ruin before ultimately being defeated and killed by the game's hero. Far from being dismayed, the reincarnated protagonist embraces this fate, as he has always loved villains with compelling tragic backstories.

Armed with complete knowledge of the game's plot gained from countless playthroughs, the new Weiss immediately sets to work rewriting his destiny. Using his future knowledge as a cheat, he begins avoiding every pitfall that led to the original character's demise. He works to rehabilitate his mismanaged territory, strengthen his position, and prevent the death flags that would lead to his early grave. Along the way, he attracts the loyalty of Rosalia, an overpowered maid devoted to him, and sets his sights on saving other villain characters from their tragic fates, including figures known as the Evil Bloody Mistress and the Cruel False Saint.

The setting is a fantasy game world where noble politics, territory management, and predetermined story events shape the lives of all characters. The protagonist must navigate this world while balancing his desire to become a proper villain with a better future and the complications of winning the hearts of the women around him. The story follows his efforts to use game knowledge strategically while contending with forces that still seek to destroy him.

The first volume introduces Weiss's reincarnation, his immediate use of game knowledge to gain advantages, and his early successes in changing his fate. By the end of this volume, he has begun assembling allies and saving other doomed characters from their original story paths. The second volume raises the stakes considerably. After successfully turning his territory around and saving two other villains from their tragic ends, Weiss faces a new crisis when a neighboring noble declares war on him. Framed for involvement in the slave trade and isolated from potential allies, he must rely entirely on his game knowledge to craft a perfect survival strategy. The situation grows more complicated when his sister suddenly returns from the capital, and the old tensions between them threaten to undo all his careful plans. The conflict forces Weiss to confront not only external enemies but also the family dynamics that made the original character's tragedy so compelling in the first place.