Penang, 1939, sixteen-year-old Philip Hutton is a loner. Half English, half Chinese and feeling neither, he discovers a sense of belonging in an unexpected friendship with Hayato Endo, a Japanese diplomat. But when the Japanese invade Malaya, threatening to destroy Philip's family and everything he loves, he realises that his trusted friend has been harbouring a devastating secret. Philip must risk everything in an attempt to save those he has placed in mortal danger and discover who and what he really is.