Abstract: The present invention is directed toward a container coupling system that releaseably couples a modular container to at least one carried container. Coupling is achieved by a coupling assembly which includes a first coupling portion and a bearing region are located on a loading side of a lifting container; and a second coupling portion and a contact region are located on a carried container. A coupling assembly couples a lifting container with a carried container by releaseably engaging a first coupling portion with a corresponding second coupling portion. Additional embodiments of a modular container include a removable frame and lift plate assembly.