Founder at the Gate

A tech billionaire retires to work as a janitor at his very first factory. His son, an engineer there, resents him for his modest life. When the son unveils his greatest invention, the father attends the ceremony—only to be mocked by the manager and staff. Then he presents his employee badge: Number 001. The factory manager scrambles to verify, but the truth is already out. The man they humiliated built everything they stand on.