The real story in 'It's a Sin' is about a group of friends. They were living their lives, but then the AIDS epidemic hit. It reveals how the medical community was initially ill - equipped to deal with it and how the stigma attached to AIDS made life so much harder for those affected. It also shows the love and friendship among the characters in the face of such a difficult situation.
One possible theme could be redemption. If it's about a sin, then perhaps the story focuses on how the character tries to make up for their wrongdoings.
Well, in a particular story, an Amish man committed the sin of stealing. The consequence was that he had to return what he stole plus some extra as a form of restitution. He also had to do community service work for a period of time. The Amish community believes in making the offender take responsibility for their actions and also making amends in a very practical and visible way so that the community can heal and the offender can learn from their mistake.
The show 'It's a Sin' stays true to the real story in many ways. It shows the time period accurately, from the fashion to the music of that era. The way the characters interact with each other also reflects the real - life relationships of the people during the AIDS epidemic. The emotions they feel, like the shock when someone gets diagnosed, the anger at the lack of support, and the love they have for each other in the face of death, all come from real - life stories. This makes the show a very honest and poignant portrayal of the true story it is based on.
Well, if 'it's a sin real story' is about a particular event or experience, perhaps it involves some moral or ethical dilemma that was considered a'sin' in a certain context. Maybe it's a personal story of someone who made a mistake and felt it was a sin. Without more details, it's hard to say much more.