Fast-forward to the future

This time a strange flashing cube from the magic suitcase sends them to a nearby city, Hadenstown, in the future, and they find themselves surrounded by flying cars, tall glass buildings, and robots; but Randall is also there, and the two children must scramble to figure out just what the mysterious...

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Bibliographic Details
Main Author: Mass, Wendy
Format: BOOK
Published: Branches/Scholastic Inc 2019
Series:Time jumpers 3