It's a story that likely involves some sort of future war. Maybe it has elements like advanced technology, different factions fighting, and the struggle for survival in a world changed by war.
Given that I don't have access to information regarding its readership numbers or cultural impact, it's difficult to deem it as popular or not. It could be that in certain literary circles or among fans of the author it has gained some acclaim, but on a broader scale, it might not be as well - known as some best - sellers.
The novel 'Tomorrow When the War Began' follows a group of teenagers who find their hometown invaded and have to fight for survival and defend their land.