The cheerful but clumsy college student Rika encounters constant misfortune in her normal life. When a missing report forces her to break the school’s rule against setting foot on campus after 9 pm, things take a turn for the worse. She soon finds herself under attack by an evil spirit known as a Djinn! Fortunately, Ganda, The Night Defender, comes to her rescue. To show her gratitude, she decides to be a Night Defender’s assistant. But does she have what it takes?