Sure. In stories, all kinds of strange and wonderful things can occur. It could be a fantasy story where magic defies the laws of nature. Maybe a character discovers a hidden power within themselves that they never knew existed. Stories are all about imagination, so 'aisa' (such things) can definitely happen.
Sure. A story can have a plot where a person's dreams come true in the most unexpected ways. It could be that a struggling artist suddenly becomes world - famous overnight. There can be a lot of 'aisa' (such) events in a story. The beauty of a story is that it can break free from the normal boundaries of life and create a world of its own with unique happenings.
Honestly, I don't have a definite answer. It might be based on a person whose story was brought to light and then adapted for the show. Or it could be a blend of various real-life elements from different people. We might need to look into the background and production notes to get a clear understanding.
Well, 'Ek Tha Tiger' has an original story that revolves around Tiger, an Indian intelligence agent. He is sent on an assignment and there he comes across Zoya. They fall in love but their national loyalties pose a big challenge as he is Indian and she is Pakistani, which forms the crux of the story.