The movie follows 3 couples in 3 consecutive eras, and the "premarital examination" that was apparently a thing back then to check physical compatibility. But the thing is, except the last arc, the previous two had largely half-baked, one dimensional plotlines. And the premarital examination itself didn't really play a huge role in any of them nor the arcs were really woven around it and the people's thoughts about it(despite it being the title of the movie), more like it was added in last moment for each arc for some additional drama and to remind the viewer this is (supposedly) what the story is about. It was quite unsatisfying to watch. Therefore I don't necessarily rec this movie.