The story begins a long, long time ago, when a great demon fell in love with a fairy who was "difference in appearance and duplicity". The gods fell under the crazy offensive of the big devil, and were naturally not tolerated by the three realms, so the two of them lived in seclusion. Later, it was discovered that the immortal was almost destroyed physically and mentally. Fortunately, the big devil used his blood and essence to protect the remaining soul of the immortal. With the efforts of the big devil to save the immortal, the immortal turned into a seed again. The big devil planted him, and soon the big devil exhausted his energy and fell into a deep sleep...