Doca (Otávio Müller), Danillo (Gabriel Braga Nunes), Carlinhos (Marcello Melo Jr.), Branco (Milhem Cortaz) and Samuel (Caio Blat) are five policemen working undercover at the Complexo do Alemão, an area which gathers several slums and is considered one of the most dangerous places in Rio de Janeiro.<ref name=autogenerated1 /> Their operation goes wrong after the government threatens to raid the place using military vehicles, which leads local drug lord Playboy (Cauã Reymond) to cut off all the slum's communications, leaving them unable to contact their boss, Samuel's father sheriff Valadares (Antonio Fagundes) and forcing them to hide at the basement of Doca's pizzeria, which serves as their base of operations. Their situation is worsened when Valadares' assistant Pixixo (Izak Dahora) is almost killed by Playboy's men and drops a briefcase containing details on all the policemen infiltrated in the slums.