The story centers on Lilia, a girl reincarnated in another world as a 0-year-old child of a marquis, but retained her memory as a gamer in her previous life. When Lilia finds out that magic exists in the new world she was in, her gamer instincts kick in and she begin training when she could only crawl as a baby. As a result, Lilia's magic reached the level of a sage at the age of five. She is then invited to the royal palace and had a fateful encounter with someone.