Anna has never met anybody like Loll: a British hostess at the Moonglow bar in the Japanese city of Osaka. With her blonde wigs and shimmering dresses, Loll cuts a mesmerising figure. But Anna is troubled by the secrets Loll hides; the identity of her best client with shadowy links to the city's crime underworld; and the sight Anna witnesses one afternoon: Loll teetering on the edge of a railway track, caught in the deafening rush as a train hurtles by. Whereas Anna has come to Osaka to learn more about her half-Japanese heritage, Loll has no clear reason for being there and no easily discernible past. And so when she disappears, there are only the barest clues as to where she might have gone. Soon Anna is thrown onto a trail that will take her into the darkest corners of the neon-choked metropolis - hidden, forbidden places from which those who know the city best warn her to stay away.