Female Taoist priest Lin Xi descends the mountain to extend her life, unexpectedly meeting Fu Jingyao, who possesses purple qi. Wanting to borrow his purple qi to save her little life, she mistakenly ends up married to him. Newly entering the city, she relies on fortune-telling stalls to make a living, using her mystical arts to resolve bizarre events and seeing through the warmth and coldness of human hearts. As one commission after another comes in, her separated family ties gradually surface, and secret sorcerers also set their sights on her. Meanwhile, the man who initially had mutual needs with her has long since fallen truly in love with her in their day-to-day life together. From mutual need to mutual care, the two walk side by side through crises, giving this marriage—sparked by the quest to extend life—a true home.