As the class practices to perform at the upcoming event for their parents, Nobita is having trouble playing his recorder correctly. As usual he bluffs that he'd be able to do it perfectly with a little more practice. When it doesn't go so well he uses one of Doraemon's gadgets to make music disappear for a day, not realising how much...

Shoma and Kanba Takakura's younger sister Himari has been diagnosed with a terminal disease. One day, while visiting Himari's favourite aquarium she suddenly collapses but finds her springing back to life. What's more, penguins visible only to them become part of their lives. It seems the hat they bought at the aquarium has...