Having practiced for a thousand years, the Tribulation Stage cultivator Lin Beichen returned to the mortal world to undergo his final tribulation. After saving Song Qingci, the president of the Song Group, he became her personal bodyguard. Relying on his extraordinary medical skills and martial prowess, he made a name for himself in Yuncheng, discovering further that Song Qingci was both the descendant of his junior martial brother and the emotional tribulation he had to endure. Just as the two were gradually developing mutual affection, his arch-nemesis, whose spiritual roots he had severed a thousand years ago, reappeared and kidnapped Song Qingci for revenge. Faced with the choice between eternal life and his beloved, Lin Beichen abandoned his immortal status, trading his thousand years of cultivation to bring his lover back from the dead, and ultimately realized that mortal warmth surpasses ten thousand years in the immortal realm.