Lewis is a brilliant twelve-year-old with a surprising number of clever inventions to his credit. His latest and most ambitious project is the Memory Scanner, a machine that will help him find his birth mother so they can become a family. But before he can find her, his invention is stolen by the dastardly Bowler Hat Guy and his diabolical hat – and constant companion – Doris.

Lewis has all but given up hope in his future when a mysterious boy named Wilbur Robinson whisks our bewildered hero away in a time machine and the two travel forward in time to spend a day with Wilbur’s eccentric family. In a world filled with flying cars and floating cities, they hunt down Bowler Hat Guy, save the future and uncover the amazing secret of the Robinson family.