在这部勿怕我剧情/惊悚片中,想要给自己紧张的生活寻找一点改变和刺激，主人公迈克尔瞒着家人报名成为了一种新的抗抑郁药物实验的志愿者。由于出现了严重的副作用，这项实验必须立即中止，但是迈克尔却没有停止服药。情况慢慢失去了控制，迈克尔曾经所有被压抑的本能都开始以暴力的形式释放出来，令所有人大吃一惊。
42-year-old Michael needs a change in his life, so when he hears about clinical trials for a new anti-depressant, he signs up to be a guinea pig - without telling his family. Because of dangerous side effects, the trial is subsequently abandoned but Michael continues to take the pills. Having lost all control, Michael's repressed instincts resurface with a force and violence that no-one could have predicted.
