Born into the Tang Dynasty, Li Chengqian finally awakens the "Father Gets Angry, Son Gets Happy System". Every time he drives his father, Li Shimin, into a furious meltdown, he earns Rebellious Son Points, which he can use to recruit mighty generals, brilliant strategists, and powerful special skills. His first move is to snatch Wu Ling before anyone else can get to her. He then openly challenges the emperor at court. While everyone else fights to become Crown Prince, he only wants his father to live another fifty years so he can keep working for him. But as powerful aristocratic clans meddle in politics, foreign enemies invade, and plagues spread, this seemingly outrageous and irreverent son gradually becomes the influential leader revered by officials and supported by the people of the Great Tang.