1985 follows friends Marc and Franky, and his sister Vicky, in the turbulent 1980s. Marc and Franky move to Brussels for a career with the Gendarmerie. Soon the three young people are sucked into a spiral of crimes that are attributed to the so-called "Bende van Nijvel" gang.
Bouhouche is arrested for the murder of his friend Mendez. Together with Goffinard, Marc eavesdrops on the prison conversations between Bouhouche and his wife, which yields important information. For a moment it seems that they can really catch the Gang now, but then it comes to a shocking confrontation.
