Snow, a high school girl, is left alone after her mother, who owned a mobile lunchbox store with a snack cart, dies suddenly. In her grief, the recipe book left by her mother suddenly glows, and she finds herself transported to another world! There Snow meets Edgar, a shy inventor, and Loki, a rabbit who speaks the human language.

The warmth and charm of Snow's lunch boxes even reach the ears of the king of the land...?

Snow then begins to realize her dream of "selling bento in a snack cart," a dream that she and her mother wanted to fulfill in this world...?