These Talented Twins Take a Dangerous Turn on the Road to Discovering Big Secrets! Thrills, spills, and cheating death are just part of an average day on a not-so-average summer vacation for these two smarty-pants siblings! Coke and Pepsi McDonald are still stuck on the wacky family road trip that began in Mission Unstoppable, and now a brand-new evil mastermind is trying to kill them! Coke and Pepsi never asked to be geniuses. They never asked to get lowered into a basket of boiling French fries, either. And they certainly never asked to be frozen in soft-serve ice cream, stampeded in a wild stadium riot, or kidnapped on a high-speed roller coaster. But that's what happens when a red-haired villain named Archie Clone is chasing you across America. This just might be the most dangerous road trip in history — and the most awesome!