Looks pretty intense...
It's just been announced that a giant asteroid is heading to earth, and the world will end in 21 days. This makes Steve Carrell's wife leave him on the spot, and Keira Knightley have a bit of a breakdown - against a backdrop of the entire world going mental as a result of the news.
People are shagging whoever they want, wearing what they thought they would never, giving up their jobs, eating anything in sight, and generally turning to chaos.
In the midst of all this is what looks like a very moving friendship between Steve and Keira's characters. Check out the trailer;