该剧本由André Téchiné和Régis de Martrin-Donos撰写,以即将退休的技术和科学警察的特工Lucie为中心。一对年轻夫妇(一个小女孩的父母)来到他的小区,这让他孤独的日常生活感到不安。当她爱上她的新邻居时,她发现父亲Yann是一名反警察活动家,有着沉重的犯罪记录。Lucie的职业良知与她帮助这个家庭的愿望之间的道德冲突将动摇她的确定性......
Big Baby tells the story of Adam Lewis, a successful horror screenwriter struggling for inspiration for his latest script. After a graphic and realistic nightmare of a hulking man dressed in a baby mask and onesie who axe murders his girlfriend Kate in the middle of the night, Adam gets the inspiration he needs for his new screenplay. Excited about the direction his story is taking, he starts losing himself in his script. Things are better than ever for Adam and Kate until “Big Baby” starts appearing in real life and tormenting and killing victims fueled by his own revenge. Characters from Adam’s script begin to pay him visits pleading for their lives, and he quickly realizes he holds their fate in his hands. Power and fear completely consume Adam until his girlfriend Kate is terrified of the man she once loved.