Edna and Gerald wanted the joys of parenthood without the messy realities, making a wind-up robotic boy named Robbie their perfect, controllable solution. But when Robbie's key mysteriously begins turning on its own and he starts asking profound questions about life, death, and his own soul, their convenient child becomes frighteningly human. Confronted with the unpredictable burdens of true parenthood they tried so hard to avoid, the couple must make a dark and desperate choice to reclaim their quiet lives in this gripping sci-fi tragedy about the true cost of conditional love.