A science-fiction thriller that traces the life of Jack Hyland, a surgeon who practices in the future with robots. Along the way he is stalked by a figure from his past who threatens his existence and that of his friends. In time, he befriends an android named Caine who helps him identify the true meaning of the threat and to understand the developing relationship between humanity and robotic technology.

It's the near future and Dr. Jack Hyland a surgeon who specializes in robotic surgery is stalked by a psychopath who taunts him with signs that say, "You've been warned" prior to each attempt to kill him. Jack uses his connections with the robotics industry and an android named Caine to find the stalker and resolve the puzzle. Jack uses his connections with the robotics industry and an android named Caine to find the stalker and end the campaign of terror. Despite the attacks and numerous attempts on his life, Jack and his friends remain optimistic and confident with a shared sense of humor throughout the ordeal as they learn the truth about the stalker's motivation and intentions.