Simplify the following text for a Grade 13 native English-speaking person.
Original: While the show is typically set in ancient times , its themes are essentially modern and it investigates the ideas of taking responsibility for past misdeeds , the value of human life , personal liberty and sacrifice , and friendship .
Simplified: Although it is ostensibly set in ancient times , the themes of the show are essentially modern : taking responsibility for past misdeeds , the value of human life , personal liberty and sacrifice , and friendship .