On the day that forensic doctor Gu Yuan was suspended, a human molar that should not have existed was removed from the chest cavity of his nineteenth unidentified corpse. Three months later, he crawled out of the incinerator with his hair sewn up by his own hands - with the same tooth marks on his chest. He pursued this clue and found that 36 corpses with implanted "parts" were hidden in the city's 800 unsolved cases. His own medical record when he fell from a building at the age of fourteen stated that he died that day. He had the same thing in his chest, beating for twenty-three years. Thirty-seven empty chairs in the underground morgue are waiting for him - if he sits on that brand-new chair, all the "parts" will be activated and the whole city becomes their breeding ground; if he refuses, he must find a way to reverse it within forty-eight hours, otherwise he himself will become the activation signal. The price of the reversal was: the "seed" in his chest was already part of his heart. If you take it off, you will die.
Intention: You are not yourself, but you still choose to die for "you".