Yan Xiaosui, an ordinary high school sophomore girl, has had a big change in her life since she picked up a box of unwanted contact lenses at a bakery on the corner of the street! Wearing this contact lens, she can see the obsession of the deceased 20 seconds before his death! And her happy friend Gu Lang was admitted to the Criminal Police Academy and successfully became a criminal police officer. From then on, what kind of life greeted her...