So you know the new French cartoon LoliRock, right? Well, if you don't, then here's the real story.
Iris was actually a young grade school girl and over-obsessed Sailor Moon fan who thought she was a famous pop star and magical princess from the world of Ephedia, which was made from her head. Because of this belief, she was made fun of at school by her classmates and her parents and teacher didn't accept her behavior. Iris still didn't care since she still thought she was a teenage alien princess with magical ice/crystal powers.
Then, suddenly that night, Iris was mysteriously taken to a place far away from her hometown by two strangers (who were actually The Twins) and they began to frequently hit her head to a brick wall. When Iris opened her eyes, she realized that she was getting hurt by those siblings. She tried to cast a spell at the victims, but then one of them said that she had no magic powers since she's just a bimbo, she finally injured her head.
While trying to get home from the horrendous attack, Iris didn't remember anything, implying that she lost her memories, and she later blacked out next to her home. When her mother opened the door wondering who it was, she became easily shocked because she realized that it was actually her daughter, so she sent her to a hospital.
Upon ending up on the hospital, Iris was finally put into a coma for many years, and her permanent sleep started the universe of LoliRock.