The young women of the present have little to do with the innocent girls of yore. Now they grow older too soon, so do not hesitate to seduce anyone who gets ahead, even if married.
That’s what happens to a married man we’re going to see on Knock Knock. Two young girls go into their house with the purpose of seducing him, something they achieve because they are very beautiful. I do not think any man would resist even if he were married, if two girls like those in the movie come into his house.
What this man does not know is that girls do not want to seduce him because they like it. The idea they have is much worse, because they just want to have fun and complicate life or something worse.
Sadism will soon appear, so this man will curse the day he listened to the two girls and did not stay at home with his wife.