故事讲述了风靡十年的超人气热血IP《排球少年!!》中人气最高、最精彩绝伦的垃圾场决战。日向翔阳因为心怀成为“排球小巨人”的梦想加入了乌野高中排球部，逐渐成为独当一面的副攻手。春季高中排球比赛上，乌野高中排球部终于迎来了与音驹高中排球部的正式比赛。同为“没落的豪强”，两支队伍惺惺相惜，却从未站上过同一场正式较量的舞台。长久的纠葛终于迎来了结，一场“只有一次”的命运对决即将开幕！振翅一击吧，心怀梦想的少年们！
Wille has always dreamed of becoming a superhero and fight crime alongside his father. This dream is shattered when Willes baby brother, Charlie, is born. Charlie gets all the attention, and on top of that – he has superpowers. When a supervillain and an evil scientist enact a plan to overthrow the city, Wille and Charlie must put their differences aside and work together as a ...
