Mizuki has never played a musical instrument. She's never marched in time with a group (it's harder than it looks!). And she's never spent time on school activities when she could be studying. But after leaving behind her high-stress high school in Tokyo and moving to small-town Akita with her aunt, she's looking for a fresh start. And when she crosses paths with Akira, a cute-but-grumpy trumpet player who introduces her to their school marching band, this may be just the chance she needs to take a leap and find herself.