厌倦了无聊的学业，奎德（肖恩·埃文斯 Shaun Evans 饰）、斯蒂芬·格雷斯（杰克逊·拉斯波恩 Jackson Rathbone 饰）及其女友谢丽尔·弗洛姆（汉娜·斯蒂恩 Hanne Steen 饰）合作进行一项探寻人类恐怖之源的研究。他们采访应征者，请他们讲述各自心中最恐惧的事情。与此同时，这三个人慢慢讲述了各自的心结。斯蒂芬的哥哥死于车祸，因此他对汽车和死亡有着天然的恐惧；谢丽尔的父亲在屠宰场工作，致使她对肉类心生抵触；奎德则在6岁时目睹了父母被破门而入的男子杀害的惨状，血腥的阴影时刻笼罩心头。 他们的研究逐渐接近尾声，但是奎德的情绪却变得越来越不稳定，他最终走向崩溃的边缘……The outcast cinema student, Stephen Grace, does not drive cars due to the trauma of losing his brother in a car accident. He befriends, Quaid, who since the age of 6 has experienced dreadful nightmares and daydreams about the death of his parents. Quaid proposes they research about each one's innermost fear. Stephen sees the chance of developing an original thesis for college and invites his friend, Cheryl, to work with them. Among the interviewees, Stephen talks to his colleague, Abby who works with him in the library. Abby has a complex about the way she looks. When the work is almost complete, Quaid has an outburst at one interviewee's and ends up destroying the camera and editing equipment. Stephen begins to re-evaluate the situation.
