In the gangsters' den

From 1927 to 1931, the two most influential criminal groups held all of America in cold fear. The struggle for power between the Don of the Sicilian clan and the godfather of the American gang often resulted in completely innocent people, random witnesses of disputes, becoming victims. This continued until a fatal day. Once again, the interests of the Italian and American mafias overlapped. They tried to resolve the controversial situation with the help of weapons. As a result of the largest shootout in American history, both gang leaders were killed. The gang members who managed to survive were arrested by the police. Many secret hideouts, illegal establishments, and criminal conspiracies were uncovered. However, no one ever found the mafia's treasure. Your team suspects that it is hidden in the walls of the underground bar "Chicago".