In a future where Humanoids make up a significant portion of society, Dr. Hikaru Sudou operates a clinic for these advanced machines during the day. At night, he transforms into the mysterious Moggadeet, delving into illegal surgeries to uncover clues about his missing mother. Through encounters with patients facing unique challenges, such as questioning their identities and seeking improvements, Hikaru navigates a world where the line between human and machine blurs. As technology progresses, the concept of humanity is continuously redefined, posing intricate dilemmas about the essence of being human or a Humanoid.