"Campfire Cooking in Another World with My Absurd Skill" centers on Mukouda Tsuyoshi, an ordinary salaryman who is unexpectedly summoned to a fantasy world alongside three heroes. Unlike the heroes, who possess combat-oriented abilities, Mukouda’s skill is "Online Supermarket," a seemingly mundane ability that allows him to access and purchase items from a modern-day Japanese supermarket. Initially dismissed as useless, this skill becomes the cornerstone of his survival and success in the new world.

Mukouda’s journey begins when he is abandoned by the kingdom that summoned him, as his skill is deemed irrelevant to their war against demons. Left to fend for himself, he uses his ability to procure food and supplies, quickly realizing its potential. His cooking, enhanced by high-quality ingredients from his supermarket, attracts the attention of powerful beings, including Fenrir, a legendary wolf, and Sui, a slime with a voracious appetite. These creatures form bonds with Mukouda, drawn by his culinary prowess, and become his loyal companions.

As Mukouda travels through the fantasy world, his cooking earns him recognition and favor among various individuals, including adventurers, merchants, and even royalty. His ability to create delicious meals using ingredients from his world sets him apart, and he often finds himself in situations where his food becomes a bargaining chip or a solution to problems. Despite lacking combat skills, Mukouda’s resourcefulness and the protection of his powerful companions allow him to navigate the dangers of the world.

The narrative balances slice-of-life elements with light adventure, focusing on Mukouda’s interactions with his companions and the people he meets. The story emphasizes the joy of cooking and the bonds formed through shared meals, while also incorporating moments of humor and tension as Mukouda faces challenges unique to the fantasy setting. The series explores themes of adaptability, the value of seemingly ordinary skills, and the importance of companionship in an unfamiliar world.