Another possibility is that 'tar' is a symbol in the story. The true story could be about a difficult situation or a relationship that is 'sticky' like tar. It might be about a family feud or a friendship that had some problems. The use of 'tar' as a symbol could help to illustrate how hard it was to get out of that situation or to resolve the issues.
Perhaps 'Tar' is not a name but an object. It could be a story where 'tar' played a crucial role. For example, in a historical setting, tar was used to build ships. The story might revolve around the workers who dealt with tar, their lives, and the importance of their work. It could show how tar was sourced, prepared, and used, and the impact it had on the community at that time.
It could be about a person named Tar. Maybe Tar had an extraordinary experience like traveling to a far - off place and the story details all the adventures and challenges Tar faced during that journey.