“Lamb”isthestoryofachildlesscouple,María(Rapace)andIngvar,whoaresheepfarmersinIceland.OnChristmasEvetheyfindanewbornwhoishalfhuman,halfsheep.Longingforachildoftheirowntheydecidetokeepthelamb-childandraiseitastheirownregardlessoftheconsequences.