The story follows Stephanie, a rebellious and determined 12 year old girl who dreams of becoming a superhero and following in the footsteps of her late mother. However, her dream is suddenly crushed when she fails the difficult entrance exam for the prestigious Hero School. Just when it seems that her chance of becoming a hero is over, Stephanie is given an unexpected opportunity to prove herself. She must secretly enter the School of Rogues and recover a powerful artifact that has been stolen. While navigating the dangerous world of young villains, Stephanie faces difficult choices that put her loyalty and courage to the test. Her mission eventually leads her to the mysterious Villain of Villains, a terrifying and powerful creature whose existence threatens the future of both heroes and villains.