Zhang Yi'an grew up carefree, thinking his life would be just like his father's: guarding a peaceful immortal mountain, using magic and medicine to protect the beings of every realm in the surrounding lands, and eventually passing that responsibility on to his own son. Then one day, his father sent him down the mountain. After meeting Qin Yansu and Yuan Qinglin, he realized that the responsibilities he had to shoulder in this world were beyond anything he had ever imagined. When he thought he had given his life, yet still couldn't save everything he loved, he met another version of himself from a different universe. Only then did he learn that his mission had just begun.
Theme: Even knowing that hardship lies ahead, embrace life with passion and give everything for love, without regrets.
