Sweden, late summer of 2011. Self-taught astrophysicist Petra has calculated that the atmosphere will collapse on the 21st of September that year, around 21.20 to be more precise, bringing about the end of times. Armed with this terrible knowledge, Petra meets Johan, a domesday prophet, and Agnes, a widow of 75 who has made bank living a double life on social media as a young influencer. Together, the trio race through Europe as they plan to make the most out of the time they have left, in more ways than one. But of course, things rarely go to plan, even the end of the world.