In this episode of the twilight zone, a bunch of family members are tricked into wearing masks for their dying father/grandfather. It was his dying wish for them to wear a mask that represents their ugly personalities and once he passes, and they take off their masks to see that their faces have changed to match the masks.
I'm the kinda guy that likes getting to the TF and not watching the whole episode but I found a video that tells the whole story in less than 7 minutes.
Enjoy
https://www.youtube.com/watch?v=QPomprYSd_o