The Dance with the Devil (1993)

Wasil returns home from USSR after getting his Ph.D., after being appointed at the university as a teacher, he marries his old love when he knew that she got divorced, on a field trip to study the flora of an area he discover a strange flower, after analyzing it and testing it on a rabbit he notices that the rabbit has disappeared, he starts testing the fluid from the flower on himself and finds out that he has traveled back in time where he meets his grandfather, day by day the effect of the flower take control of him and his life become a mess.