Dennis, exiled from a top-tier adventuring party, encounters the beautiful, former slave girl, Atelier, and decides to open his own diner, something he's always dreamed of. However, those who knock on his door are, for some reason, all quirky individuals with their own problems! The kind-hearted Dennis fills his customers' stomachs with 'supreme cuisine' and uses his 'strongest cooking skills' to solve their troubles. He slices down villains with his meat cleaver and protects his friends with his wok! This is a place where both hearts and stomachs are satisfied—“Adventurer's Diner'!!"