Doug realized four things while lying under a highway in middle-of-nowhere Nebraska: •Concussions hurt. •The government had tried to kill him. •His friends were going to hate his plan. And the most horrifying, •Zombies are real. The second “Bad Day” book takes Doug, Jenna, Nikki and Terry on a road trip through a plague-swept America toward Mayday, Kentucky, a haven that may not be as safe as safe as it seems.