Bian Yiyuan, Captain of the Old Fox Criminal Investigation Team × Yan Dong, Professor of Criminology with Bipolar Disorder and Little Old Man
The love of smart people is probably a competition between you and me.
The nemesis of the "old fox" is actually the unknown "little old man"
A suicide case involves a new type of drug and a group of ghosts in the dark. There is no name or record. The lapse of their tasks allows Bian Yiyuan to catch the corner of the shadow.
As Bian Yiyuan, Yan Dong and the others dug out threads, what surfaced was not only the existence of the ghost, but also Yan Dong's past.
Purpose: Solving crimes and catching "ghosts", love and redemption