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!