Although Ryo Machiko is still only in middle school, both of her parents work overseas and her beloved grandmother recently passed away, so she lives in a big apartment all by herself. To keep herself occupied in the big empty space, Ryo practices her cooking, something that she thought she excelled at... but nothing ever seems quite right anymore. There's something missing, but what could it be? The answer unexpectedly arrives with her runaway cousin Kirin, who's looking for a place to stay while she attends cram school. Much to Ryo's surprise, her cooking seems to improve when they eat together! Food it turns out, always seems tastier when it's made for and shared with people you care about, and things only get more appetizing when Ryo's friend Shiina joins in the culinary adventures in GOURMET GIRL GRAFFITTI!