Liang Wanzhou, founder of Daichuan Capital and owner of a fortune worth hundreds of billions of yuan, quietly returns to his hometown. Twenty-two years ago, during the July 16 flash flood, he fell into the water and disappeared. His biological father was crushed and left disabled by a falling beam while saving the family of Liang's adoptive parents. Overnight, he lost his son, was left crippled, and, while unconscious in his hospital bed, had someone else claim the honor of his heroic rescue. Liang Wanzhou disguises himself as a bankrupt young man burdened with 300,000 yuan in online-loan debt. He steps into his adoptive mother's restaurant and his biological father's ferry crossing. His adoptive mother, afraid of being associated with poverty, throws him out, while his biological mother, blind in one eye, brings out an iron box containing account books she has kept for twenty-two years. As reporter Su Nian and a trail of old archives gradually uncover the truth, what was buried beneath the floodwaters was a human heart colder than the flood itself.