In Greek mythology Lethe is the underworld river from which the dead drink to forget their life on earth. The first film in a possible trilogy of mythologically inspired pieces with female protagonists. In Greek mythology Lethe is the underworld river from which the dead drink to forget their life on earth. The first film in a possible trilogy of mythologically inspired pieces with female protagonists. In Greek mythology Lethe is the underworld river from which the dead drink to forget their life on earth. The first film in a possible trilogy of mythologically inspired pieces with female protagonists. In Greek mythology Lethe is the underworld river from which the dead drink to forget their life on earth. The first film in a possible trilogy of mythologically inspired pieces with female protagonists.