根据社会活动家约翰戴维森的人生经历改编。他年少时被诊断出患有妥瑞氏综合征，会不受控制地抽动身体或口吐恶言。妥瑞氏综合征迫使约翰与同龄人疏远，而他则不懈与这种鲜为人知的症状作斗争，积极为妥瑞氏人群发声。

Two estranged half-sisters who are reunited and tormented by a malevolent trickster following the death of their father.