Japan's newest competitive sport, keijo, operates under a straightforward set of rules: female-only participants must stand on circular platforms floating in a pool—known as "lands"—with the objective of knocking opponents off using only their breasts and butts. Despite this bizarre premise, the sport draws millions of viewers nationwide and features a substantial prize pool. Many aspiring athletes take up the challenge in hopes of becoming the next national champion. After graduating from high school, the lively 18-year-old Nozomi Kaminashi enters the world of keijo, hoping to bring home a fortune to her poor family. As a gifted gymnast, Nozomi quickly proves herself a tough competitor after stealing the spotlight in her debut tournament. Meeting new friends and rivals as she climbs the ranks, Nozomi discovers that the path to stardom as a keijo player is filled with intense competition that will challenge not only her body, but also her soul.