Most people are anxious to enroll in and pursue their education at this prestigious university. The high tuition is a result of the school's effective management and complete equipment. This is not your typical school though; there is savagery there. These pupils are gang members and criminals, making them unlike other classmates. A few gangs are thought to be a part of organized crime. They provide a level of organization and resources that make it possible for unlawful actions to be much larger and more intricate than they could be by a single criminal. The Sather family is in charge of running this school. It was created in 1823, and as of today, 2023, it is still alive. There were numerous mysteries at this school that needed to be resolved 200 years ago, but they haven't been, and no one is aware of them. The Sather boys were sent by their great-grandfather to their school one day, but they had no idea why he had ordered them there. The siblings progressively uncover the long-hidden truth behind what they perceive to be a decent school for students as time goes on.

The Delrico family's only son, the "Unica Hijo," is Zero. His parents sent him to the Philippines to learn how to live on his own, but they also wanted to teach their only son a lesson. He caused his servants to want to resign and leave the mansion because of the problems he was causing, but they were unable to do so because they owed money to his parents. They have been employed by the Delrico family for a considerable amount of time, so they cannot abruptly quit. There is no stopping Zero. It appears to have been raised in an environment of chaos, and his favorite flex is denying people access to him. Sulhee, on the other hand, is so horrified by Zero that she would do anything to murder him. Being messed up and troubled by Zero in the past has irritated her. She suddenly became less interested in everything the moment she saw his face, felt his presence, or heard his name or voice. But one day, her thoughts and aspirations for zero changed, along with her feelings for zero over time. She now loves and cares deeply about the person she once detested the most. The female lead, She secretly followed him wherever he went out of curiosity. The longer she follows, the more she learns about the male lead, which, out of curiosity, leads her to think that she and he are destined for each other. The more she kicks herself involved with the male lead, the more she develops her feelings and falls for him. Through encounters, the troublemaker develops feelings for the female lead, but is unable to convey these feelings to her because of the difference in their identities and belonging to different time zones.The villains, who have been hiding out, now learn about the presence of the female lead and how crucial she is to the troublemaker; as a result, they want to meddle with her and kill her in order to turn the male lead into an evil criminal and achieve their aim of destroying the world. Together, the male lead and female lead fight the antogonists and stop the world destruction with the aid of their friends.