My Missing Son Becomes a Billionaire?!

Edward Carter is about to be promoted to engineer at the machinery factory where he works as a technician. Before it goes through, his apprentice and the deputy director accuse him of corruption and he is dismissed. The apprentice is a neighbour's boy whom Edward took in and trained as if he were his own son. Twenty years earlier, when Edward's own son was four, this boy pushed him into a dry well. He told everyone the child had simply vanished, and Edward has spent the twenty years since looking for his son without knowing who was responsible. The son turns up as the representative of a corporate group. His memory of what happened has come back. He stops the apprentice from laying hands on his father, and the two of them are reunited. The apprentice has them both locked up so that what he did stays hidden. The son's stepfather, who is rich, and a secretary come to help.