'M3GAN' Trailer Features Taylor Swift & Dancing Megan Doll Meme

The story follows Gemma (Allison Williams), a brilliant roboticist at a toy company who uses artificial intelligence to develop M3GAN, a life-like doll programmed to be a child’s greatest companion and a parent’s greatest ally. After unexpectedly gaining custody of her orphaned niece, Gemma enlists the help of the M3GAN prototype – a decision that has unimaginable consequences.