Lin Mo and Jiang Yi had been facing each other since childhood, but due to an accident, their souls exchanged. From the awkward run-in at the beginning, to the love that quietly grew when they worked together to investigate the case, I thought that the misplaced love could find its home, but a revenge made Jiang Yi (in Lin Mo's body) fall at the agreed street corner, still holding the flowers he wanted to send to Lin Mo (in Jiang Yi's body). After that, Lin Mo, as a forensic doctor, independently dissected "himself" (the deceased Lin Mo's body where Jiang Yi was) and his lover for the first time. The great grief caused him a mental breakdown and he was sent to a mental hospital. He faced the mirror and told his love over and over again, his brain weaving lies in order to "survive": it was "Lin Mo" who had passed away, and Jiang Yi's soul "existed" in the form of "Lin Mo". He forgot "Lin Mo" in his incomplete memory, just to let "Jiang Yi" "live", but what was reflected in the mirror was always endless sadness and despair of never losing his love.