M3GAN is a marvel of artificial intelligence, a realistic doll programmed to be a child’s best companion and a parent’s greatest ally. Designed by Gemma (Allison Williams), a brilliant roboticist at a toy company, M3GAN is able to listen, observe and learn while becoming a friend, teacher, playmate and protector to the child she bonds with.
When Gemma unexpectedly becomes the legal caretaker of Cady (Violet McGraw), her 8-year-old orphaned niece, she doesn’t quite know what to do and doesn’t feel ready to be a mother. Under intense work stress, Gemma decides to link her M3GAN prototype to Candy in an attempt to solve both problems… but it won’t be long before she discovers the unimaginable consequences of her decision.