Christmas and New Year in North London. Beneath the spread of fireworks, amidst the sound of cheers and celebrations, best friends Diana and Luna find themselves stranded over the river and after midnight on the last night of the 20th century. Faced with either waiting for a bus that might never come or walking for several hours in the bitter cold of midwinter, the two girls set out along the path of the river and through the heart of London in pursuit of tea, toast, and a good night's sleep, all the while dancing around the issue of their feelings for one another.