An accident changed her life. Not only did she lose her memory, she also suffered from a strange amnesia - as soon as zero o'clock passed, her memory returned to zero in an instant. Repeating one thing every day - getting to know the people around her and herself again, she forgot about herself.
Fortunately, the knowledge she learned will not disappear. What she forgot was just the people.
This kind of life is dull and boring, but the boy who suddenly breaks into her world makes her peaceful life ups and downs. Is he her lucky star or a nightmare? !