Plot
A revenge plot Je-Hwi had hatched against Pyo a boy who bullied him since high school with a stranger he met over the internet, begins to grow way out of control with cruel and unpredictable results.
Where to watch Who's That Knocking At My Door??
Who's That Knocking At My Door? is a drama movie featuring Im Ji-gyu and directed by Yang Hae-hun.
Who's That Knocking At My Door? is currently streaming for free (ad-supported) on Tubi TV.
It is also possible to buy Who's That Knocking At My Door? on Amazon Video, Google Play Movies and YouTube.