Alice is the younger of twins who lived under the care of their grandfather, who has recently died. A day after the funeral, at school she meets a new boy, Jared, who is revealed to also be a twin. Her friends, Quinn, Helen and Margaret, tease her about her new acquaintance, and it is revealed Helen has a crush on him already.
Meanwhile Alice’s twin sister, Vera, has been missing for longer than usual. While talking to the principal about her disappearance, Alice runs into Jared, who invites her to ice cream near his house. On their way out, they pass Helen, who Alice invites too. They take the ice cream to where the twins are staying: an abandoned bus in the woods. Here, Jared’s twin brother, Aric shows up, but he brusquely excuses himself as soon as he sees Alice and Helen. Despite Helen’s efforts, Jared is mainly interested in Alice. At the end of the night, feeling a strange sense of foreboding, Alice leaves early, while Helen stays.
The next day, Helen does not come to school. Vera returns, with a changed appearance – she has swapped her usual over-the-top punk style and hair for a style matching Alice’s. She quickly hits it off with Jared and ignores Alice’s warnings that there is something off about him.
A murdered boy surfaces, his body drained of blood. He was a student at Alice’s high school, but no one knows what happened. Helen returns to school a few days later, looking ill from a self-described food poisoning. A few days later, Helen has a party, where she invites half the school, including the twins. Aric mysteriously disappears halfway through, but Jared doesn’t seem worried, only irritated.