New York City newlyweds Jude and Mina have a seemingly perfect relationship. But things take an unsettling turn with the birth of their son. Convinced that the baby must be kept free of all contaminants, Mina develops fanatical obsessions with veganism, cleanliness, and purity that may kill the child unless Jude can stop her. This intense psychological drama suggests that sometimes a parent's love can be the scariest thing of all.