Lamb is a horror/fantasy/drama.  The story concerns Maria (Noomi Rapace) and Ingvar (Hilmir Snær Guðnason), two Icelandic farmers.  They lost a child years ago, and their lives are now filled with the routine tasks of tending to their field and their flock of sheep.  One day, an ewe gives birth to a lamb that is not a lamb.  It’s part lamb, part human.  Seeing the lamb a second chance at motherhood, Maria takes it from the barn and cares for it as if it were her own baby.  The trio become a family, but the unexpected return of Ingvar’s ne’er-do-well brother Pétur (Björn Hlynur Haraldsson) threatens their happiness.  Before long, Maria is forced to confront the tension between her and Pétur, as well as the ramifications of taking the lamb from its birth mother.