The iconic “gentleman thief” Lupin III returns in an action-packed, continent-spanning adventure, as Lupin III and his colorful underworld companions race to uncover the secrets of the mysterious Bresson Diary, before it falls into the hands of a dark cabal that will stop at nothing to resurrect the Third Reich.

The story is set in Shahalta, a tiny European city-state floating in the air with practically no contact with the outside world for years. The government is transitioning from a monarchy to a republic, and to celebrate the occasion, a national treasure exhibition is being held. Lupin infiltrates the exhibition for the secret royal treasures, but not before sky pirates snatch them first.