Kim Ji-Woo, a 26-year-old struggling part-time worker in Seoul, dreams of becoming a successful actor since childhood. After quitting his job, he mysteriously gains a "system" that allows him to rapidly improve his acting skills. With each new role, Ji-Woo’s talent grows, propelling him from small parts to leading roles in major productions. As his career takes off, he becomes the world’s best actor, earning fame and admiration