I don't really know. It could be inspired by real events but transformed into a fictional narrative. Maybe check reliable reviews or interviews related to the movie.
Reflection might be a key theme. As it's the last shift based on a true story, the person involved is likely to reflect on their entire tenure at that job. They might think about their achievements, mistakes, and how they've grown. It could also have a theme of new beginnings, as the end of this shift is the start of something new, whether it's a different career path or a more relaxed life after retirement.
The closing shift is purely fictional. The plot and characters were made up by the author or writers to engage and captivate the audience. There's no real-life basis for it.
I'm not sure which specific 'last shift based on true story' you're referring to. There could be a movie or a book with such a title. It might be about someone's final work shift that is based on real - life events. Maybe it involves the experiences, emotions, and challenges faced during that last shift.