The crime series "Undercover" tells the story of an extrajudicial secret department led by Colonel Yegor Sobol. He and his subordinates fight against an elusive gang of criminals. It is known that this dangerous group is led by a mysterious villain known to all as the Ghost. Through their actions, this criminal authority and his henchmen can undermine the stability of the state apparatus. But Sobol and his colleagues will not allow this to happen.