Lin Chi came back from the dead in a car accident. She lost the ability to see faces clearly, but gained the gift of sensing the color of obsessions - she became a courier for the "Human Express Service", specializing in delivering obsessions from the living to the dead.
Her partner Chen Mo is an obsessive person with a cold body temperature and a transparent form. His work number is fixed on May 20, 1978. Lin Chi couldn't see his face clearly, and could only remember the coolness on the back of his neck, the warmth of the scar on his wrist, and the words "it's still complete even if it's not delivered".
As orders such as "Compound Letter" and "Twins' Dislocated Life" progressed, Lin Chi discovered that Chen Mo's existence was consuming her body temperature, and her face blindness was actually a kind of self-protection - if she saw his face clearly, he would completely disappear.
What's even weirder is that the rain from 1978 has begun to seep into the present. Double handwriting appeared on the express delivery slip, and the cracks in the copper bell formed the historical date. However, Chen Mo's handwriting was exactly the same as that of Xu Jingshan, the founder of the express delivery bureau.
When the destruction order came, Chen Mo blocked the fatal blow for her, leaving only a piece of clothes that smelled like the rain of 1978. Lin Chi finally understood: the so-called obsession is not to deliver, but to admit that some regrets can never be made up; the so-called protection is not to let her remember, but to choose to be forgotten by her.
But this time, she chose to mortgage her memory and future, and symbiosis with him in the exchange of body temperature——
"I don't need to see your face clearly, I just need to remember your temperature."