Jiang Yueli is thrown into the cold courtyard, and everyone bets she won't survive three days. Yet, she turns the dilapidated courtyard into a fortune garden, making a fortune relying on a pot of poisonous grass. Prince's mansion traitors, the Dowager's scheming, and palace poison plots come one after another; she neither cries nor begs, but directly holds the grass into the palace to publicly examine cases. Others plant grass to survive, she plants grass to make a comeback. The cold-faced Prince Ning originally only wanted to watch her save herself, but later personally paved the way for her. Only then did everyone realize that what the cold courtyard trapped was not an abandoned consort, but a blade about to overturn the Prince's mansion.