The story takes place in the 24th year of the Republic of China. Multiple murder cases in Star City have remained unsolved for four consecutive years, causing panic among the people of Star City. Under pressure, the police superintendent's office must close the case as soon as possible. Captain Qi Haoting's son Qi Han returned to China and took over the newly established psychic office in place of his father. At first he had no clue, and the investigation of the case was at a deadlock. But since he bought an old camera, strange things happened one after another. Qi Han, who does not believe in ghosts and gods, unexpectedly encounters Nan Yi who is sealed in the camera. With Nan Yi's help many times, one person and one ghost solved many unsolved cases. Eventually, Nan Yi also lifted the seal and was reincarnated. However, Qi Han found that he had already fallen in love with Nan Yi. When they parted, they said goodbye under the bright night sky with fireworks. Qi Han had been waiting for Nan Yi to come back, and their story continued.
