At the Passage of Ziletia (1970)

Ahmet, a Turkish guy in his early twenties visit his grandfather's abandoned mansion located somewhere in the northern Anatolia. Thinking that he would return to where he spent his early childhood, only to find out that the place is now in ruins. When he goes to sleep. An unexpected angel will visit him to give her a blessing of the truth. He wakes up being not the guy he was before.