Paralyzed by drink and despair since the accidental death of his young daughter Shelby, Detective Kyle Sommers nonetheless must lead a task force to catch a brutal serial killer. Nicknamed the Cradle Robber, this murderer has methodically snuffed out the lives of children along the California coast. Now he's come to Portland. Investigating, Sommers learns that a strange man has been saving local children from various dangers -- then mysteriously vanishing. With the help of Sherrie, a brilliant and embittered scientist, Sommers learns that the man is a time traveler who, grieving for his own murdered child, has vowed to save the children of the future. Laughed off the task force as word spreads of his theory, Sommers investigates on his own. Desperate to undo his tragic history, and rebuild his career, Sommers determines to find the traveler. But the Cradle Robber has hatched a diabolical scheme. Intent on continuing his carnage, the baby-killer has laid a trap for both Sommers and the time traveler... one sure to destroy every adult and child in the city.