Sartre's play No Exit explores existentialist themes of free will, responsibility, and human relationships. It tells the story of three deceased characters - Joseph Garcin, Inez Serrano, and Estelle Rigault - who find themselves trapped together in a room in Hell. They realize that their eternal punishment is being forced to interact with and depend on each other for companionship, with no way to exit the room. The characters represent different ways of living in "bad faith" by denying personal responsibility through excuses or living in denial.