Transmedia Design practice is usually seen as a response to the contemporary mediascape and as an important element of communication curricula. The development of transmedia practice and the planning process of narrative worlds and their distribution across multiple channels has followed a ‘learning by doing’ approach. The practical dimension has often anticipated the theoretical one. However, if we seek to apply the potential of this discipline to areas beyond entertainment, it is necessary to develop a design practice model that derives from the professional world. While acknowledging the paramount role of transmedia practice in communication design, this chapter will discuss the Plug Social TV experience as an example of design methodolo...