When Leo's girlfriend turns down his marriage proposal and reveals that she has been cheating on him for over a year, his world falls apart. Devastated, he flees Hong Kong for the summer, his broken heart in tow, and wanders across mainland China by bus and train. Each city is indistinguishable from the one before it until he arrives in Xiamen where he meets Pearl, a single mother whose quiet kindness is such a balm for his grief that he falls unexpectedly and helplessly in love with her.

Pearl's greatest wish is for her five-year-old son, Win-win, to beat the odds and find success. When Leo stumbles into her life and offers her not only a second chance at love, but a new and prosperous life for her and Win-win in Hong Kong, it all seems magical, too good to be true.

Neither wants to break the spell. But what happens at the end of a summer like that?