In a special feature bundled with the Lupin 40th anniversary Blu-ray collection, Lupin organizes a gathering of all his companions at a luxurious villa situated on a secluded island. Reuniting after a prolonged five-year absence, Lupin hints at a significant surprise in the making. However, Fujiko, Goemon, and Jigen become suspicious of Lupin's mysterious conduct. Their intrigue deepens upon encountering a man concealed behind an iron mask, shackled to a wall, as they embark on unraveling the enigmatic circumstances surrounding this captive figure.