I'm not sure specifically as it could be many things. It might be a typical love story about two people falling in love, facing challenges together and finally getting together.
It could be that the story is centered around a chance encounter that leads to love. Say, a man and a woman meet in a foreign place, they start to know each other and gradually fall in love. Along the way, they might have to deal with misunderstandings, long - distance issues, or the interference of other people. The plot would then revolve around how they overcome these obstacles to stay together.
I'm sorry, I'm not familiar with the specific story of 'pyaar ki yeh ek kahani'. It could be a unique love story from a particular book, movie or cultural context.
Not having complete information about the 'pyaar ki ek kahani serial' full story, we can assume some common elements. Love is likely to be the central theme. There may be characters with different personalities and backgrounds coming together. Conflicts might arise due to external factors like family interference or internal factors like jealousy. The story could also revolve around how the characters overcome these issues to be together or not, depending on the nature of the plot. It might also have elements of friendship and loyalty as they often play a role in love - related stories.
I'm not really familiar with the full plot of 'pyaar ki ek kahani serial'. It might be about love and relationships, as the name implies. But to know the exact full story, you could search for detailed recaps or reviews online.