As Justine exchanges vows on her wedding night, she can't shake off her feelings of unease, despite the lavish celebration paid for by her sister and brother-in-law. Meanwhile, a catastrophic threat looms as a blue planet, Melancholia, hurtles towards Earth, causing her sister Claire to wrestle with fear and composure.

Melancholia
As a last resort, two estranged sisters must lay aside their bitter rivalry and collaborate to avert a global catastrophe threatening the very survival of their planet.