Dear Herbal Lord is the indelible love story between Song Lan, a fairy formed out of the Isatis root and Chu Zhimo, the King of Medicine. Song Lan has her heart set on only one thing which is to complete her immortal cultivation. To her horror, she is mistakenly eaten by the princess Qingyun. In order to escape, she must force a marriage with Chu Zhimo in order to absorb his medicinal energy. Song Lan may be a silly Isatis root, but she is very stubborn. No matter how indifferent Chu Zhimo acts towards her, she doesn't shy from her bold intentions to marry Chu Zhimo. To make it happen, she takes a special trip back to Shenxiang Mountain to bring along some of her fairy friends back to the mortal world. Among them are a ginseneg doll, a sexy saffron and a righteous angelica herb - each ready and willing to do everything in their power to help Song Lan in her pursuit of love.