You can tell a lot about a girl by the lists she makes. The most pressing items on Saskia's are the things she wants to achieve by age thirty, such as curating a show of Young British Artists, turning down at least one marriage proposal and becoming a real size ten. Trouble is, Saskia turns thirty in three weeks' time, and things aren't looking up. But that's before one of the richest men in the world walks into her gallery.