At twenty-three, Alice Hare leaves England for New York. She falls in love with Manhattan, and becomes fixated on Mizuko Himura, an intriguing Japanese writer whose life has strange parallels to her own.
As Alice closes in on Mizuko, her 'internet twin', realities multiply and fact and fiction begin to blur. The relationship between the two women exposes a tangle of lies and sexual encounters. Three families collide as Alice learns that the swiftest answer to an ancient question - where do we come from? - can now be found online.