Million Doll centers on an idol-loving hikkomori named Suko who has a special ability. She can make any idol popular just by writing about them on her blog! One day, while being forced to go to the supermarket by her sister, she happens to see a live performance from the Fukuoka based idol group "Itrio." Suko decides that she will do everything in her power to push them into stardom. Unfortunately, she has compete with the charismatic otaku blogger Ryu-san who supports the underground idol Mariko!