Lavinia thinks her nephew, Billy, is a brilliant artist and hangs one of his paintings in Angela's living room. When Lucy and Old Tom see it, they think Angela must be desperate for a painting, so Old Tom paints a self-portrait to replace it. By mistake, it ends up at the Art Gallery in an exhibition of 'Modern Masterpieces'. Meanwhile, Lavinia is trying to interest the Gallery in one of Billy's paintings. However, the curator thinks it's rubbish and points to Old Tom's painting as an example of great art. Lavinia leaves, just as Old Tom and Lucy sneak in and retrieve his painting. When Lavinia arrives at Angela's, she is surprised to see the 'great example of modern art' hanging on her wall.