In this exclusive television interview, Kirsty Wark meets two of the biggest stars of the modern art world, Damien Hirst and Jeff Koons. The occasion is a major new exhibition of Koons's work collected and curated by Hirst at his new gallery in London's Vauxhall. In an intimate and revealing interview, Hirst and Koons talk about how they first met and fell in love with each other's work. Both started out as rebels who provoked outrage. Now they are part of the art establishment and among the richest artists in the world. But, as Wark discovers, they retain their passionate belief in the power of art.