The Zombie Chasers #2: Undead Ahead

BRAAAAAINS!!!
Zack Clarke, his best pal, Rice, and middle-school queen bee Madison Miller survived the night of the living dead—but the nightmare's not over yet!
Zack's sister is a zombie and his parents might be goners. Rice has uncovered the source of the zombie outbreak, and Madison's health-drink habit may be the key to a cure. Ozzie, the newest zombie chaser, is a nunchaku-wielding, monster-fighting machine who's ready to kick some undead butt.
The whole country—from their parents to the president—is counting on them. Can the Zombie Chasers save the nation from brain-gobbling ghouls? Or will the US of A become the US of Z?