ALL BAEKHYUN CAN REMEMBER IS WAKING UP IN A CELL. HE DIDN’T REMEMBER HIS PAST. HIS MEMORIES HAD FADED. BUT ONE DAY, HE RECEIVED A LETTER FROM SOMEONE WHO USED TO KNOW HIM; SOMEONE WHO USED TO LOVE HIM. HE GOT A LETTER FROM THIS PERSON EVERYDAY. FROM SOMEONE WHOSE INITIAL IS PCY.