Three years ago, Shen Mo accidentally injured a close relative and was expelled from the Shen family in Jiangling, becoming an outcast. Three years later, he picked up a seriously injured and dying man on the edge of the deep sea - it was Pei Qing, the enemy who had designed to frame him and cause him to turn against his closest relatives. To save or not to save? After a thought, Silence stretched out her hand. The next moment, the mysterious law of cause and effect suddenly came: saving one person will result in another result. If the beneficiary does not repay this period of cause and effect, the rescuer will be deprived of all luck and become a useless person. Pei Qing woke up, looked at Shen Mo and sneered: "You want me to pay you back? Unless you give me your life." Shen Mo also smiled, because he found that he could see everyone's luck - Pei Qing was entangled with the truth of the conspiracy three years ago, and the whereabouts of his old love Jiang Wuya. But every time he uses this power, he must sacrifice a piece of memory. The first time, he forgot the promise he made with Jiang Wuya in his childhood; the second time, he forgot the appearance of his close relatives; the third time, when he had to sacrifice his last memory with Jiang Wuya in order to save his new friend Aheng from the mouth of the deep sea monster - he discovered that the Aheng he rescued was the undercover agent sent by Pei Qing. The whispers of Dagon in the deep sea echo day and night, and insane monsters wander the shores. Silence finally understood: in this cursed sea, every rescue is a self-sacrifice; every victory means the loss of a relationship. But this time, he didn't want to lose again. He wanted to take back everything owed to him, including principal and interest, from the hands of these powerful families.