Gu Ming. Gu Ming traveled to a fantasy world of swords and magic, but he was not the protagonist, but was forcibly bound by a system that required him to play various "villain roles." From the villain who bullies the protagonist to the demon king who destroys the world, he must follow the script given by the system and interpret the image of the villain to the extreme, providing experience packages and stepping stones for the protagonist's growth. However, the system did not dictate that he had to "fail." Gu Ming discovered that as long as he acted well enough, he could even secretly accumulate strength during the performance, or use the villain's identity and resources to do some "extraordinary" things. Every performance is an in-depth understanding of the role and the accumulation of strength. While he conscientiously plays the role of the villain that the protagonist hates to the core, he secretly develops his own power, collects treasures, and learns forbidden magic. The ultimate goal is to escape from the control of the system and become the biggest "villain" behind the scenes in the world.