The Down-and-Out Dad Is the Business King

After spending five years developing the countryside, a devoted father returns to the city to visit his son's new family. But right after saving his presumed grandson from drowning, he is met with contempt rather than gratitude. Digging deeper, he discovers a devastating truth: the boy isn't his son's child, and his daughter-in-law is secretly draining their fortune with another man. Silently enduring the humiliation, can he expose the betrayal and open his son's eyes before it's too late?