Show playback apparatus and program

This device (100) is provided with the following: a reception unit (110) that receives, from equipment (300), a show accompanied by a main advertisement; a processing unit (120) that displays show video on a display unit (140); and an engine (131) that displays the main advertisement on the display unit (140). Said engine (131) transmits, to a sub-device (200) that receives from a server (400) and displays a related advertisement related to the main advertisement, control information that indicates a display control method for the related advertisement.