Chase and Ava are ready for their next adventure! When they touch a glowing cube in their magic suitcase, they jump forward in time! In the future, they find awesome flying cars and tons of robots. But they don't have much time to explore . . . bad guy Randall is after them! Chase and Ava need to act fast to put the cube back where it belongs. Will they complete their mission . . . or will Randall succeed in stealing the cube? Oriol Vidal's engaging illustrations appear on every page. Newly independent readers will be eagerly drawn-in by this time-travel series from New York Times bestselling author Wendy Mass.