Undercover (Bulgarian: Под Прикритие, romanized: Pod Prikritie, pronounced ) was a Bulgarian crime drama television series produced by Bulgarian National Television that premiered on BNT 1 on April 17, 2011. The series tells the story of the undercover police officer Martin Hristov (Ivaylo Zahariev), who infiltrates the gang of Bulgarian mafia boss Petar 'Dzaro' Tudzharov (Mihail Bilalov). Martin Hristov, a specially trained agent, is appointed to go undercover in the gang of Bulgaria's top mafia boss, Dzharo. On his way he faces numerous challenges in order to completely become part of the criminal world. His task becomes more complicated when he meets the big boss' girl, Sunny. While undercover he gets a promotion in the mafia hierarchy and becomes part of the world full of crime, violence and corruption.