Millions of years ago, the Five Immortal Mountains stood like pillars supporting the heavens. Mo Yuchen and He Wanyi were high gods of two of those mountains. Back when they descended to the mortal world to undergo a trial of love, they fell for each other. But just as they were about to return to their rightful places, an alliance of demons and monsters launched a surprise attack on the Immortal Realm, aided from within by treacherous immortals. Under the devastating assault, the mountains crumbled and the divine halls collapsed. In the end, the immortals and gods sacrificed themselves to create seals, trapping the evil spirits inside the Immortal Locking Tower and the Demon Locking Tower.
Ten thousand years later, the Immortal Realm had become nothing more than a legend. Mo Yuchen had become a doctor in the mortal world, while He Wanyi had made a name for herself as an outstanding investor. They each had their own identities, but every year on May 18, Wanyi would suffer a stabbing pain in her heart, only to recover by the next day. She searched for an explanation and discovered that she had only half a heart. She had no idea when she had lost the other half. She was told that her heart had been pierced during the great battle, and that only half remained when she was rescued. Then, after an ancient painting went missing from a museum, painting demons and evil spirits appeared in the mortal world once more. The two high gods finally broke the silence they had kept for ten thousand years. As they joined forces, they gradually uncovered the truth behind the War of the Gods. At last, Wanyi also discovered why she had only half a heart.
