Lin Yu, a criminal investigator in Juqing City, is exceptionally skilled at solving cases. In 2015, he solved a kidnapping case in an incredibly short time. One day, he received a text from a stranger using Meng Lin's phone number. The message said that around the Mid-Autumn Festival, the four criminals who had murdered the famous painter Meng Lin two years earlier would travel to Laiye City to steal a painting Meng Lin had made before his death.
Lin Yu decided to take charge of the two-year-old case. He went undercover to Laiye City with Sun Na, Xie Jin, and Li Guangbin. As the investigation progressed, the four criminals from that year were gradually identified. The identity of the mysterious person who had texted Lin Yu was about to be revealed, and the truth behind Meng Lin's death would slowly come to light...
