A police detective investigating the kidnapping of elementary school students becomes involved in the intricate network of the underworld. Beijing policeman Li Hui Yan has gone alone to a small town in Dongbei due to a kidnapping case. By chance, he meets Zhou You, a mortician who is searching for the truth about his father's death. The two are pulled into grudges and entanglements that span three decades. In twelve days and nights, a secret about human nature is revealed.

在外打拼的华人，习惯了聚散分离，留下还是离开，是他们亘古不变的一个选择题。转眼间已到27岁的刘夏，面对周遭的聚散离合、面对异国的边缘生活、面对摇摇欲坠的梦想，她不得不为自己的前途和命运做一份打算。