When Lily finds her boyfriend cheating on her the summer before senior year, it's just another broken piece in her already disappointing life. Then she meets Mason, who seems equally as broken for a different reason, but together they make summer their own and set off to complete a bucket list of promises they vow not to break...and maybe some feelings develop along the way. But their summer fling ends in disaster when Lily and Mason realize they're from rival schools, competing in rival teams. Even worse, when a tragic accident puts their priorities into perspective, can Lily and Mason find a way to be together, and will their friends—and the ultra-competitive sports teams—allow them to have the happy ending they dream of...?