It's about the events that took place during the 2012 Benghazi attack. It shows the heroic efforts of a group of security contractors who fought to protect the American diplomatic compound in Benghazi, Libya.
The '13 Hours' film is based on the true story of the 2012 Benghazi attacks. It shows the events that took place during those 13 hours when a group of American security contractors fought to protect the U.S. diplomatic compound in Benghazi, Libya.
In the '13 Hours' based on true story, there are security contractors like Kris 'Tanto' Paronto. These guys were highly trained but found themselves in an extremely difficult situation. They had to rely on their skills, their comradeship, and their will to survive. Each of these main characters had their own arc in the story, from their initial reactions to the attack to how they coped and fought throughout those 13 hours.
I don't really know. To determine if it's a true story, you might need to research its origin, any claims made by the author, or see if there are references to real people or events. But without that, it's a mystery!