When salaryman Tsuyoshi Mukouda is mistakenly summoned as a hero to the Kingdom of Reijseger in a parallel world, he navigates a suspicious royal family by leveraging his unconventional skill, the 'Online Supermarket.' Initially dismissed as worthless, this power becomes his secret weapon as he procures Japanese delicacies and tools at bargain prices. Through his culinary prowess, Mukouda attracts the attention of the formidable mythical wolf Fel, who strikes a deal to become his loyal companion in exchange for delectable meals. Together, they embark on a journey across lands, blending the roles of adventurer and trader while savoring gourmet delights along the way.