This intro isn't perfect. However, it has the essential elements, or most of them, that AP-level writing requires. It sees significance in its summary of the plot; it embraces the meaning of the work in question in its entirety. It is clearly written.
In Richard Bausch's novel, "Peace", Robert Marson, the leader of a small group of soldiers, struggles to maintain his identity during the hardships of fighting a war. The novel begins with Glick, Marson, and a group of soldiers who are ambushed by a German soldier. In the ensuing fight, two soldiers are shot, and in revenge, Glick kills the defenseless whore. This action sets the stage for an inner battle that Marson and the other soldiers fight to keep their humanity.