邓肯夫妇(格雷戈•金尼尔、丽贝卡•罗明-斯塔莫斯饰)唯一的儿子亚当(卡梅隆•布莱特饰)在车祸中身亡。痛失爱子的夫妇俩仿佛坠入了生命的深渊,但是古怪的医生查德•威尔斯(罗伯特•德尼罗饰)走到他们面前,告诉他们可以帮助他们重新与儿子团聚时,他们看见了救命稻草。 于是克隆亚当的计划产生了。一切都很顺利,这个新生儿果真与亚当一模一样,除了偶尔显露的邪恶。一家三口度过了幸福的8年时光,到了之前亚当死亡的第九年到来时,问题出现了,亚当真正的生命是在8岁截断的,这个克隆人没有样本可以依照,不可预计的问题出现了。 人们总要为自己的选择付出代价。The 8-year-old Adam is killed in a traffic accident. His grieving parents agree to recreate him through experimental and illegal cloning, conducted by an ingenious but pushy geneticist. After eight happy years, a scary door opens between Adam II and someone from the past.