On her first day at Okanoue Girls' High School, a school that allows students to ride motorcycles, Hane Sakura takes interest in her classmate, Onsa Amano, after seeing her ride her bike to school. The two go to the school's Bike Club, whose only club member is a silent girl in a helmet named Raimu Kawasaki, who takes Hane for a ride on her Kawasaki ZX-12R. After joining the club alongside Onsa, Hane applies for a motorcycle license, initially struggle with lifting a bike but managing to pull it off after seemingly hearing a voice coming from her bike. During her lessons, Hane comes across another classmate, Rin Suzunoki, who takes her and the others to a bike shop to pick out a bike, only to argue with Onsa when she disses her taste in Suzuki bikes.