Following the death of their eight-year-old son. Adam, devastated parents Jessie (Rebecca Romijn) and Paul (Greg Kinnear) are desperate to do anything to resurrect their beloved child. Befriended by a doctor on the forefront of genetic research (Robert DeNiro),they are offered a chance to reverse the rules of nature and clone their son. The experiment appears successful under the doctor'swatchful eye, and Adam grows into a healthy, happy, young boy...until his Eighth birthday. Then the night terrors and frightening flashbacks are only the beginning. Reaching the age at which the original Adam died, the new Adam begins to change, and a new sinister personality emerges.