Tsuyoshi Mukouda is transported to a fantasy world and discovers his only skill is "having free access to online supermarket".

Along with three other heroes, Tsuyoshi Mukouda is transported into a fantasy world to rescue a kingdom from a mysterious threat. However, it soon becomes clear that Tsuyoshi Mukouda has been dragged into the summoning ritual by accident. His only skill turns out to be "Net Super," which allows him to open an interface where he can purchase and obtain food-related supermarket items from modern Japan. Unceremoniously booted out of the palace, Tsuyoshi Mukouda sets out on his own into his new world.