When a child is born, they're usually assigned a guardian angel to look after them through life. However, due to a clerical error, a demon was assigned to Zhou Jieqiong. One day, a four year old Jieqiong was in her room, wishing she had an imaginary friend, so she sat on her floor, closed her eyes tightly and wished really hard. When she opened her eyes, a woman was in her room. Jieqiong had accidentally summoned her guardian demon.