[1] Liang Yaoguo and his younger sister Zhiling had a hard life growing up with a loving but socially irresponsible mother and without a father.
Youshun later remarried Xianglan, a trendy and arrogant younger woman who bore him a son and a daughter, Tianyou and Tianhui.
While Tianbao dotes on his younger siblings and the threesome have a good relationship, he and Xianglan do not get along due to her favouritism towards Tianyou and Tianhui, leaving the exasperated Youshun sandwiched between them.
Eventually Xianglan's elitist attitude drives a wedge between herself and Tianyou and her husband and makes enemies of their neighbours.
Junjie, Yaoguo and Tianyou realise that there is a thin line between good and evil and a single decision could change their lives for better or worse.