On a cross-country vacation with their parents, twins Coke and Pepsi, soon to be thirteen, fend off strange assassins as they try to come to terms with their being part of a top-secret government organization known as The Genius Files.

As their cross-country journey with their parents continues through the midwest, twins Coke and Pepsi, now thirteen, again face strange assassins at such places as the first McDonald's restaurant and Cedar Point amusement park.

Genius twins Coke and Pepsi McDonald embark on a trip to Graceland and are horrified by the reappearance of their supposedly deceased arch nemesis Dr. Herman Warsaw, who marries their aunt Judy.

Offered her longed-for opportunity to leave the RV caravan and study art, seventeen-year-old Dessa Rhodes questions whether she is ready to leave her family, the open road, and the boy she loves.

"For the life of him, William "Scoob" Lamar can't seem to stay out of trouble--and now the run-ins at school have led to lockdown at home. So when G'ma, Scoob's favorite person on Earth, asks him to go on an impromptu road trip, he's in the RV faster than he can say FREEDOM. With G'ma's old maps and a strange pamphlet called the 'Travelers' Green Book' at their side, the pair takes off on a journey down G'ma's memory lane. But adventure quickly turns...

"Parker twins Finn and Molly help new friend Carlos follow a treasure map left to him by his grandfather"--