Original Sin tells a story of a moment in life of a young man who comes to realisation that the church's teachings are not necessarily true but they are too deep seeded inside him that it is difficult though not impossible to break free from them. And once you do, in spite of all the praying in order not to succumb to "sin", you realize that the world keeps on turning and that you are still there, alive and well and praying! But now it is all for show! He still believes but takes the lessons with a grain of salt!

Yohan is a devout christian, spending a lot of time in church and in prayer groups. He is also aware of his own shortcomings, as he is convinced the church considers as such, and tries to make them go away with fervent prayer. One day he meets a new member of the church and is fascinated by him. JooWon notices it and takes advantage of it by making Yohan's deepest desires come to the surface.

Even though this is a short movie, just two scenes were enough to paint the portrait of each of the two characters: one is closed off and fervently praying while the other one is a charming predator! Actors did their job brilliantly! Cinematography is dark and cold, underlying the rigidity of the church!

What I saw in this movie is a slight critique of the church indoctrination and unwillingness to open one's mind to the world. Joo Won points that out, using Bible quotes, during the prayer meeting and the other members are totally confused. Yohan wants to believe but comes to terms with his sin and decides to pray the sin away! Probably until the next time!

Some people here said that the movie supports the church. I do not agree. It is more like "Don't ask, don't tell!" conclusion!
An interesting watch!