An overhead-conveying system having an overhead-conveying transport bag for automatically unloading a loaded piece good and an unloading station, wherein the transport bag comprises: a basic structure as well as a separate receiving device, which is arranged adjacent thereto; wherein the basic structure comprises a top side, a bottom, lateral sides, and front sides (24, 26); wherein the receiving device comprises a base, a top side, front sides, and lateral sides; wherein the unloading of the transport bag is performed through one of the front sides of the basic structure which is formed open, wherein an opposite front side preferably is formed open as well; wherein the bottom of the basic structure couples to the top side of the receiving device for defining a receiving space beneath the basic structure, and wherein the bottom of the basic structure, in particular in a non-loaded state (Fig. 1) of the transport bag, is formed open, wherein the top side of the receiving device is formed open in the non-loaded state of the transport bag; wherein at least the lateral sides of the basic structure, the lateral sides of the receiving device, and the base of the receiving device are closed; wherein at least the lateral sides of the receiving device are formed such that the base is liftable into an unloading position (Fig. 2B) of the transport bag, in which the base is lifted into the bottom of the basic structure, wherein the transport bag respectively comprises a retaining device extending in the region of the front sides (24, 26, 31) at least along a transition between the basic structure and the receiving device; and wherein the unloading station comprises a lifting device and a pushing device; wherein the lifting device is configured to lift the base of the receiving device of the transport bag, which is loaded with at least one piece good if the transport bag is located in an unloading position (Fig. 2B), in a vertical direction such that the at least one piece good can be pushed out horizontally by means of the pushing device through one of the front sides of the basic structure of the transport bag; and wherein the pushing device comprises a pusher which reaches into an interior of the basic structure, where the at least one piece good is located when the base is lifted, through the other front side of the basic structure. a basic structure as well as a separate receiving device, which is arranged adjacent thereto; wherein the basic structure comprises a top side, a bottom, lateral sides, and front sides (24, 26); wherein the receiving device comprises a base, a top side, front sides, and lateral sides; wherein the unloading of the transport bag is performed through one of the front sides of the basic structure which is formed open, wherein an opposite front side preferably is formed open as well; wherein the bottom of the basic structure couples to the top side of the receiving device for defining a receiving space beneath the basic structure, and wherein the bottom of the basic structure, in particular in a non-loaded state (Fig. 1) of the transport bag, is formed open, wherein the top side of the receiving device is formed open in the non-loaded state of the transport bag; wherein at least the lateral sides of the basic structure, the lateral sides of the receiving device, and the base of the receiving device are closed; wherein at least the lateral sides of the receiving device are formed such that the base is liftable into an unloading position (Fig. 2B) of the transport bag, in which the base is lifted into the bottom of the basic structure, wherein the transport bag respectively comprises a retaining device extending in the region of the front sides (24, 26, 31) at least along a transition between the basic structure and the receiving device; and wherein the unloading station comprises a lifting device and a pushing device; wherein the lifting device is configured to lift the base of the receiving device of the transport bag, which is loaded with at least one piece good if the transport bag is located in an unloading position (Fig. 2B), in a vertical direction such that the at least one piece good can be pushed out horizontally by means of the pushing device through one of the front sides of the basic structure of the transport bag; and wherein the pushing device comprises a pusher which reaches into an interior of the basic structure, where the at least one piece good is located when the base is lifted, through the other front side of the basic structure.