A high-tech robot doll in a horror movie — what could go wrong?
Gemma becomes the guardian of her orphaned 8-year-old niece Cady and decides to pair her M3GAN prototype with Cady to keep her company — leading to deadly outcomes.
Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up to date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.
Universal Pictures

“Ever since I was little, I dreamed of this perfect toy that would protect a kid from ever feeling lonely or sad,” Gemma tells Cady in the trailer.
Gemma explains to M3GAN that her goal “is to protect Cady from harm, both physical and emotional,” and the pair initially appear to get along well, dancing and playing together.
However, Gemma’s colleagues grow concerned that both Cady and M3GAN may develop “emotional connections that are too hard to untangle,” and when M3GAN provides unwanted parenting advice during a dinner conversation, the android refuses to turn off and quickly proves unyielding.
Geoffrey Short/Universal Pictures

“Don’t worry, Cady, I won’t let anything harm you,” M3gan tells Cady in the trailer, as scenes show her chasing a bully through the woods. “Ever again.”
The trailer, set toTaylor Swift’s 2019 song “It’s Nice to Have a Friend,” shows the extreme and violent lengths M3GAN goes to in the name of keeping her human companion safe, leading to a confrontation between her and Gemma, as well as some creepy dance moves from the doll herself.

In addition to Williams and McGraw,M3GANstars Ronny Chieng, Brian Jordan Alvarez, Jen Van Epps, Lori Dungey and Stephane Garneau-Monten.
M3GANis in theaters Jan. 13.
source: people.com