Paul Callan works as an investigator of miracles for the Archdiocese of Boston. Growing weary of his job and the tests it places on his faith, he takes a leave of absence and travels to Arizona to work on an Indian Reservation.

While there, Father Calero calls him and asks him to investigate a young boy, Tommy Ferguson, who supposedly has the power to heal others. Skeptical at first, Paul meets with Tommy and witnesses his abilities. He discovers that the young boy is dying, and that every time he heals another, his own health deteriorates. He also learns that his path and Tommy's are somehow inexorably linked.

When Paul is in a potentially fatal car crash, Tommy uses his power for the last time, and gives his own life to save Paul. As Tommy heals him, Paul sees the words, ""God Is Now Here"" written in his own blood.

His faith renewed, Paul returns to the church but the Monsignor dismisses his findings, causing him to resign. Paul is then approached by a stranger named Alva Keel who tel

Paul is shaken when a bus explodes after he sees the visage of a young girl aboard. After the tragedy, Paul learns that the unidentified body of a small girl is being held in the local morgue. The body is amazingly without any scars or evidence of the explosion, although he is certain that she is the girl he saw. Soon another disaster occurs, also accompanied by a vision of the girl and another identical unclaimed body. After further visitations and tragedies, Paul realizes that the girl's ghostly appearance is causing these catastrophes and he searches for a way to placate the disturbed spirit. The investigation leads the team to Rosanna Wye, the now aged mother of the young girl. The telling of her story and their ultimate reunion finally puts the little girl's spirit to rest.