Lonely, 12-year-old Oskar is regularly bullied by his stronger classmates. A new friendship develops when Eli, a pale, serious young girl who only comes out at night, moves in next door. Coinciding with her arrival is a series of inexplicable disappearances and murders.

As Oskar becomes more aware of Eli’s tragic plight, he cannot forsake her. However, Eli knows that to continue living, she must keep relocating. But when Oskar faces his darkest hour, Eli returns to defend him the only way she can.