Pluto

Kim Joon (Lee David), a transfer student at an elite high school, is arrested for the murder of Yoo-jin Taylor (Sung Joon). After being released, he holds his classmates accusing him in a room and forces them to reveal their dark secrets. As the story unfolds, dark secrets about the group's cruelty and privilege are exposed, leading Kim Joon to take them hostage before ultimately sacrificing himself to prevent further harm.