(Hardback)

When the Kudo siblings visit New York City, their sightseeing plans are interrupted when a very special dress, the centerpiece of their aunt's fashion collection, goes missing, and Alex and Mika embark on a chase around the city to find it.

(Hardback)

Accompanying their journalist parents to the 2020 Summer Olympics in Tokyo, twelve-year-old Andy Kudo and his eleven-year-old sister Mika find themselves immersed in an augmented reality game developed by a former Olympic medalist, that brings players together from all over the world to search Tokyo for virtual medals and clues to the secretive creator's identity.