Eva Khatchadourian (Tilda Swinton) is a travel writer/publisher who gives up her beloved freedom and bohemian lifestyle to have a child with her husband, Franklin (John C. Reilly). Pregnancy does not seem to agree with Eva, but what's worse, when she does give birth to a baby boy named Kevin, she can't seem to bond with him. When Kevin grows from a fussy, demanding toddler (Rocky Duer) into a sociopathic teen (Ezra Miller), Eva is forced to deal with the aftermath of her son's horrific act.