In a small town, a teenager named Millie Kessler experiences the typical high school drama, dealing with bullying and social pressure. Everything changes when a mysterious killer known as the "Butcher" begins to terrorize the community, leaving a trail of corpses in his wake. One night, after a deadly encounter with this dangerous criminal, Millie finds herself caught in a supernatural twist: the next day, she wakes up in the killer's body, while the "Butcher," now in Millie's body, starts unleashing his usual chaos in her school.
Stunned and confused, Millie must adapt to her new form and find a way to reclaim her body before it's too late. Meanwhile, the killer in Millie's body infiltrates her life, sowing panic among her friends and classmates. With the help of her best friends, Millie will have to face her greatest challenge: not only trying to stop a serial killer, but also finding a way to reverse this strange situation before everything spirals out of control. As time goes on, Millie's struggle becomes a race against the clock, filled with dark humor, tension, and unexpected moments, revealing what it truly means to confront your fears and discover your true power, no matter in which body you find yourself.