The Refuge Conquest - The Refuge Conquest, #1

In 2012, a powerful solar flare struck the earth, causing electricity to go haywire. Society as we know it crumbled across the globe. Communication had been cut off, and so, the remaining Australians had no choice but to build a system of educational refuges across the country to replace the fallen society. Four years later, a lonesome boy residing at a refuge in the heart of Adelaide encounters a mysterious girl by his usual hangout.
They instantly hit it off, but once the boy starts to discover who his new friend really is, she takes him on a perilous quest to unravel a terrible plot that threatens to shatter the refuge system and humanity beyond repair.