The background is a post-apocalyptic dynasty, where food is a symbol of power. The heroine Su Yunjin, the daughter of a criminal who possesses the unique cooking skills of "Ancient Earth", enters the palace incognito and becomes the lowest level cook. With her cooking skills that turn decay into magic, she makes a living in a harem where resources are scarce and people's hearts are treacherous. She does not seek divine favor, but only seeks to survive and revive her family's esophageal heritage. Starting with a bowl of soothing soup to soothe the tyrant Xiao Che's insomnia, to using ordinary mutated ingredients to recreate the legendary "Ancient Earth" delicacies, Su Yunjin's cooking skills became her sharpest weapon in the palace battle. She outsmarts the powerful concubine in charge of the imperial kitchen and solves a series of conspiracies caused by food. In the end, she does not rely on beauty and love, but only a cookbook and a kitchen knife, becoming a being that no one dares to mess with in the Doomsday Palace, and wins the absolute trust and respect of the tyrant.