It's the end of an endless summer, and Yotsuba is out to make the most of it. First, she'll go toe-to-toe with a cardboard robot, then help out the neighbors by eating their grapes and spearheading an impromptu trip to the beach. But when her ice cream is stolen by Yanda, Koiwai's understudy, Yotsuba may have to admit she's finally met her match!