It could be about a person named Mr Barnes who was in some sort of trouble or difficult situation, and someone took actions to save him. Since it's based on a true story, it might involve real - life events, real people, and real emotions. Maybe Mr Barnes was in a financial crisis, a health emergency, or a dangerous situation, and the story is about how others overcame obstacles to rescue him.
The title 'Saving Mr Barnes Based on True Story' gives the impression of a very interesting narrative. Mr Barnes could have been a victim of a natural disaster, say a flood or an earthquake, and the story could be about the heroic efforts of the rescuers to save him. It could also be that Mr Barnes was in a social predicament, like being bullied or ostracized, and someone came to his rescue. Since it's based on truth, it might have elements that teach us about the human condition, like how people react in times of crisis, how communities come together, or how one person's actions can change another's life for the better.