Welcome to the Worldwide Wanderer Society, the international order of curious travelers. For generations, intrepid wanderers have circled the globe seeking new experiences, celebrating cultures, and connecting the world, one adventure at a time. Eleven-year-olds Waldo and Wenda are the society's newest wanderers. Their mentor, Wizard Whitebeard, sends thee inquisitive young explorers on international travel missions so they can someday become wizard-level wanderers too. To earn their stripes, Waldo and Wenda must use their skills -- Waldo's creative observation and Wenda's bold athleticism -- to collect magic keys from all corners of the globe. But standing in their way is rival Odlulu, who can't help but cause trouble wherever she goes -- especially when magic keys are involved.