From the age of eight, Su Yunzhou—the adopted son of Madame Su—had plotted to kill five-year-old Su Ying'er, the young heiress of the Jiangcheng Su family. He prepared venomous jellyfish on the beach and even kicked away warning signs. Just as he lured Ying'er to touch his "gift," a typhoon struck. Madame Su rushed to save them but was restrained by lifeguards, who launched a rescue boat. When the boat ran out of fuel, the lifeguard dove for help—giving Yunzhou his chance. He pushed Ying'er into the raging waters. Meanwhile, Chen Yuru, who had come to the shore to end her life after losing her own daughter, stumbled upon the drowning girl. In a cruel twist, Madame Su—at the hospital to inquire about Yunzhou's deafened right ear—passed Chen Yuru carrying Ying'er, neither recognizing the other. Fifteen years later, this tangled web of fate remains unresolved...
