In 2016, the chief of the São Paulo DEIC (State Department of Criminal Investigation) Dr. Fabio Pinheiro Lopes gets a warning: a tunnel was being dug under São Paulo to steal 1 billion reais. Immediately, Dr Fábio and his team start secretly investigating where this heist could be. Through undercover agents, the police gets closer and closer to the tunnel, until the whole plan in revealed: the target is the Brazil National Bank. But could they avoid the heist and still arrest the criminals?