Li Zhen, who had been trained as a killer by his mother since he could remember, with the purpose of killing his biological father and eradicating the family power, fulfilled his mother's long-cherished wish of nearly 20 years during the last summer vacation in high school. Unexpectedly, this became the determination of his mother to pass away. He thought that his gradually whitened past could bring him with him. Giving him the qualification to put aside the darkness, he used his own methods to move forward as surely as a cunning cat. However, he encountered something that he had never owned, did not dare to desire, but was itching and unbearable, or rather a person - Shi Wenli. From then on, his own life was no longer under his control...