I'm not entirely sure specifically which 'In Enemy Hands' true story you are referring to. There could be various accounts with this title. It might be about prisoners of war who found themselves in the hands of the enemy. Their experiences could range from facing harsh interrogations to trying to survive in difficult conditions.
Since we lack information on the specific 'In Enemy Hands' true story, we can only guess about the main characters. It might be that the main characters are individuals who were involved in a particular historical event where one side was held by the enemy. For example, if it was during World War II, it could be Allied soldiers captured by the Axis forces. The main characters would then be those soldiers, and their story would revolve around their time in captivity, their relationships with their captors, and their attempts to either endure or escape.
Well, 'Enemy at the Gates' isn't strictly true. It takes inspiration from real historical contexts during the war but incorporates fictional elements and characters to create a compelling narrative.