Highway

A Flash of Light Crippled Society in an Instant...
For young Lexi Broadmoor and her brother Travis, the detonation not only took away their father, but their future as well. Now stranded on a highway far from home without any survival skills or someone to protect them, staying alive will depend on their wits, a single bug-out bag, and a map to a stranger's house.
With the grid down and a nation quickly descending into chaos, they'll need to hurry, because the lawless are taking over.
But a larger threat looms.
A mysterious foe has set in motion a countdown to a vast plan; unknown to Lexi and Travis, they're part of it.