The first installment of an adventure-packed chapter book series where traveling twins discover new states and learn how to work together to find their way home! On the last day of second grade, twins Spencer and Maggie Parker come home from school to find a camper van in their driveway. And not just any camper; a magic camper that can transport them to every state in the continental US. This is perfect for Maggie, who loves geography and is a star student, and for Spencer, who's been failing his geography quizzes and could use the real life extra credit. Together, the twins travel to a surprising new place--the rolling fields of Colorado! There they get suited up in cowboy gear, eat a hearty breakfast in the Mess Hall, and join a cattle drive. But when the group takes a moment to rest, the ranch's prized cow, Snowflake, is stolen by a band of rogue cowboys. The twins must discover how to work together in order to save Snowflake, and find their way home again.