In 1755, retired soldier Ludwig Kahlen (Mads Mikkelsen) decides to attempt the impossible - to cultivate the Danish Heath. This is a bleak and infertile wilderness which produces nothing but gorse and heather (though there are forests nearby, for some reason). He hopes to win honour and renown thereby.
Kahlen builds his house, and collects a motley crew of workers, including a priest, a pair of runaway serfs, and some lawless folk akin to gypsies. He sort-of adopts a gypsy girl. With much labour, he clears some land, then unveils his secret weapon - the potato.
Unfortunately, he runs foul of a sadistic local landowner (a wonderfully sinister performance by Simon Bennebjerg), who considers himself above the law and has no problem with violence.
The film follows Kahlen through one growing season, at the end of which his feud with the landowner reaches a bloody climax.
The epitaph on screen seems to suggest that this is based on a true story, but I don't know if that's the case.
The performances are excellent throughout; the landscape is compelling, and the cinematography superb.