该剧改编自言归正传的同名小说。李长寿重生在封神大战之前的上古时代，成了一个小小的炼气士，没有什么气运加身，也不是什么注定的大劫之子，他只有一个想要长生不老的修仙梦。为了能在残酷的洪荒安身立命，他努力不沾因果，杀人必扬其灰，凡事谋而后动，从不轻易步入危险之中。藏底牌，修遁术，炼丹毒，掌神通，不动稳如老狗，一动石破天惊，动后悄声走人。本来李长寿规划中，自己会一直躲在山中平安无事的修行成仙，直到有一年，他的老师父静极思动，又给他收了个师妹回来。
Li Changshou, a terminally ill patient in his previous life, is reborn into the Primordial World as a low-level Qi cultivator who cherishes life and avoids all karmic entanglements. Determined to dodge the great calamity foretold by the Heavenly Dao, he adopts the "Way of Steady" — his ultimate goal being to secure a humble post in the Heavenly Court and survive quietly. He operates with extreme caution: when still, he's as steady as an old dog; when he moves, he shakes the heavens. He firmly believes the era of bloodshed is over — better to trick than to kill, better to stay single than to fall in love. Yet enemies and beauties keep surging toward him like tides. Before he knows it, he becomes a mastermind pulling strings behind the scenes, entangled in power plays among multiple factions, orchestrating the "Dragon Clan's ascent to Heaven" — and even the great calamity itself accelerates toward him…
