The Guest (2018)

S1E10 Where Is Your Father, Hwa Pyung?

Yoon and Gil Young visit Hwa Pyung’s grandfather and learn the tale of Park Il Do. When Hwa Pyung finally locates his father, the man angrily accuses him of being Park Il Do himself. As Yoon and Gil Young listen closely, they notice a contradiction—Hwa Pyung’s father and grandfather recall the past differently. The truth begins to unravel, revealing that one of them is hiding a lie.