Ten-year-old Hannes, growing up with his young, poor and single mother wants to join the coolest gang in the area, the Vorstadtkrokodile. When the ‘entry test’ goes wrong, Hannes’s life is saved by Kai, who is desperate to join too but is wheelchair bound and unable to even run away when things get hot. Hannes would accept Kai but the other gang members don’t seem happy to accept a handicapped member...

“The Crocodiles” are back and they are in for quite an adventure! Frank is seriously hurt and needs a liver donation. In order to save him, the gang needs to get Frank’s brother out of prison. Their plan is risky and the stakes are high.

Up until the middle of the 19Th century, poverty stricken mountain farmers from the Ticino area of Switzerland frequently sold their children to Milan as chimney sweeps or spazzacamini. That is also young Giorgios fate. He is forced to climb through pitch black chimneys, flinging down the soot with his bare hands. But he does not lose heart. Together with his buddies sharing in the same misery, he establishes the association of Black Brothers. They stick together, struggling against their penury and getting involved in fights with the street gangs of Milan. The film tells of the gripping adventures of the chimney sweep boys and their spectacular escape back to their native land.