故事设定在中国香港，艾曼纽（诺米·梅兰特 Noémie Merlant 饰）去当地出差，因此展开了一趟与许多人相遇、寻找失落的欲望的旅程，她遇上一个叫Kei的男子，对方却一直躲避她。

The 19 years old Thomas wakes up in a hospital after three years in a coma. He doesn't remember anything. The psychologist Anna tells him that his family has been murdered and that he is the only survivor of the massacre while his sister Laura is still missing.