The engineer Karl Hartmann invents a new, gigantic brown coal excavator. He discovers that there are large deposits below his home country and decides to use the excavator there.
as Direktor March
as Olga Lossen
as Ingenieur Karl Hartmann
as Camilla von Einerm
as Die alte Hartmann
as Inspektor Bachmann
as Gemeindevorsteher
as Zofe
