While newlywed Zach McCall is recording his wife Samantha’s pregnancy on video for posterity, he begins to notice unusual — and often terrifying — changes to her body and mind.
After a mysterious night on their honeymoon, Zach and Samantha McCall find themselves dealing with an earlier-than-planned pregnancy. While recording everything on video for posterity, Zach begins to notice odd behavior in his wife that they initially attribute to nerves, but it soon becomes evident the disturbing changes to Samantha’s body and mind have a much more sinister origin.