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! Young Takuya has it tough. Since his mother passed away, he’s had to take care of his baby brother Minoru while their father works the long hours of a Japanese salaryman.

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!