A model father but unemployed, Goran Stankovic accepts a shady job, gets arrested and has no other choice but to collaborate by becoming an informant. Stuck between thugs and the police, in a world of manipulation, Goran will have to play a perilous double game to get out of it. GoSt111 is as much a perilous thriller as a vertiginous dive into the unknown world of the informants of the police.