“Pillion” follows Colin (Melling), a weedy wallflower letting life pass him by. That is until Ray (Skarsgård), the impossibly handsome leader of a motorbike club, takes him on as his submissive. Ray uproots Colin from his dreary suburban life, introducing him to a community of kinky, queer bikers and taking all sorts of virginities along the way. But as Colin steps deeper into Ray’s world of rules and mysteries, he begins to question whether the life of a 24/7 submissive is for him. Has he found his calling, or simply swapped one form of suffocation for another? 　　壁花男孩科林活得沉闷无聊，直到遇到摩托车俱乐部的领袖雷，成为了他的submissive。在雷的引见下，科林游走于酷儿摩托车手的社区中，在未知的世界探险，并开始怀疑这种无底线的顺从是否适合自己……