Ten-year-old Takuya has a new job: to look after his baby brother Minoru?looks like it's time to put on the kid gloves Takuya's class defends its honor in an intramural baseball game that gets a little too intense. Then it's off to beautiful Hawaii, where Takuya's dad tries to keep his staff together during a company vacation--while Takuya and Minoru help a pair of American kids with much more serious problems. Finally, Sunflower Nursery School No. 1 faces off against Sunflower Nursery School No. 2 in...baby sumo wrestling Young Takuya has it tough. After his mother passed away it has been his job to take care of his baby brother, Minoru while their father, Harumi, works the long hours of a Japanese "salaryman." Takuya must sacrifice the playtime usually associated with childhood for the responsibilities of an adult. Cooking, cleaning, sewing and scolding are all now an integral part of the young boy's life. "All work and no play" has Takuya incredibly frustrated and resentful of his little brother. Will Takuya find it in his heart to love the brother who is causing him so much grief?