The plot could center around a large - scale conflict that has escalated to 'all - out war'. There might be political intrigue behind the scenes that led to the outbreak. Characters may be struggling to survive, protect their loved ones, or fight for a cause they believe in. For example, it could be about two countries at war and how ordinary people's lives are upended, with themes of heroism, sacrifice, and the brutality of war.
Since it's called 'All Out War', it might depict a comprehensive and intense military confrontation. It could include elements such as different military units with their unique capabilities, the role of leadership in the chaos of war, and how the war impacts the social and economic fabric of the societies involved. Maybe there are stories of spies and intelligence - gathering operations that play a crucial role in the war's progression.
I haven't read this novel specifically, but generally in a war - themed novel like this, it might involve battles between different factions, strategic maneuvers, and the personal stories of soldiers or those affected by the war.