An ex junkie witnesses a murder. She is forced to cooperate with the killer to save her daughter's life. She must fight time, the police and criminal underworld to save the only person who means something to her.

吉恩一家的生活幸福美满，丈夫吉恩（François Marthouret 饰）兢兢业业，和善慈祥；妻子海伦（Évelyne Dandry 饰）温柔贤淑、端庄大方；他们的子女尼古拉斯（Adrien de Van 饰）和苏菲（Marina de Van 饰）也都分外听话。然而，一个不速之客的到来搅乱了家中的一切。某天，吉恩从实验室带回一只小老鼠，这个温柔可爱的小家伙仿佛具有恐怖的魔力，接触他的人全部性情大变。先是尼古拉斯突然在餐桌上宣称自己是个同性恋，接着苏菲则梦游摔成重伤，混乱不断升级……

Twenty years ago at the infamous Redwood Farm, the owner went mad and killed his family and himself. Shrouded in urban legend ever since, a stranger obsessed with the unsolved Redwood murders convinces a group of bereaved family members to venture into the wilderness in the hope of proving the existence of the notorious burlap bag-masked maniac. Their quest for truth sees a sin...