Valdimar Johannsson's off-kilter folktale "Lamb" is very much landed in visceral reality. Set on an Icelandic sheep farm somewhere in the mountains, time and attention are paid to the day-to-day grounded detail of the farm, and its occupants -- the many sheep and lambs who live within its stalls, and the wife, Maria (Noomi Rapace), and husband Ingvar (Hilmir Snaer Gudnason) who tend to them.