It depends on what you mean by 'real'. If you're asking if it's based on actual events, I'm not sure. Maybe it's fictional or inspired by some elements of reality.
Greta is partially based on a true story. The filmmakers likely incorporated real-life elements and added fictional elements to make the story more engaging and cinematic.
If the 'greta big story' is about a particular event, then the people involved could be the organizers, the participants, and the witnesses. For example, if it's a community event, it might involve local residents, volunteers, and sponsors. If it's related to Greta Thunberg, it could involve other environmental activists, politicians she has interacted with, and the general public who support or oppose her ideas.
Greta Thunberg's real story is one of remarkable activism. She, as a young girl, was deeply concerned about the lack of action on climate change. She began her activism journey with simple yet powerful gestures like sitting outside the parliament with a sign. Her message spread like wildfire across the globe, inspiring millions of young people to take to the streets and demand change from their governments. She has also faced criticism but has remained steadfast in her mission, becoming a prominent voice in the climate change conversation.
They often have detailed settings. For example, in 'The Pillars of the Earth' by Ken Follett, the medieval building of the cathedral is described in great detail, making the historical period come alive.