Liang Sanjin is an ordinary food delivery rider. His biggest wish in life is to save money to return to his hometown to contract fish ponds. Until one rainy night, a black flying knife penetrated his chest - when he opened his eyes again, he was lying in the arms of a muscular man covered in brand names, holding the recording pen left by the woman in his hand. From then on, he became the only walking vest in the city who "sleeps with whomever he touches". To be precise, he can exchange souls as long as he has physical contact with people. He will switch back after fifteen minutes, but if the other person dies, he will live in the other person's identity forever. And the mysterious supernatural organization "Ordering Bureau" that is chasing him is searching for all awakened people all over the world - they seem to be more interested in the recorder in his hand than in his people. Liang Sanjin has no way out. He can only face other people's faces, other people's identities, and other people's troubles, and piece together his erased past in a series of identity-displaced escapes.
