Unknown NumberOST. MV: Road | Unknown Number
2019|중국 대륙|全32話|범죄 수사 · 미스터리 · 범죄 · 판타지
This play mainly tells the story of Gu Mingzhe, a new criminal police officer in 2018, and Cao Zheng, a criminal police officer in 1998, who used an old mobile phone to talk in different time and space,and in the process, they uncovered a series of unsettled law case