Actually, 32-year-old Jonas and Babette, in her early 50s, have nothing in common. As a diplomat's child, Jonas has traveled all over the world, while Babette has barely ventured beyond her Swiss mountain village to the nearest town. Jonas, now settled in London, teaches mathematics and physics at a college, while Babette, who used to work in a travel agency, has spent the last 20 years in psychiatric wards and assisted living communities. While Babette tries to cope with her anxiety through writing and only travels in her thoughts, the amateur astronomer Jonas explores the night sky and foreign places, usually with a self-drawn map in hand, or he collects alphabets. No, Babette and Jonas don't have much in common. If it weren't for Jonas' grandparents' house, where Babette is now moving in and where Jonas spent the first years of his life.