In exchange for Fujiko's life, Lupin steals a crown from a fountain of concentrated sulfuric acid. This is actually a test of skill: the real objective is to show snow to Princess Guiana, of the country of Iraran. The little princess doesn't have long to live. The only way to make snow fall in the desert is to acquire the Snow Cannon from Spinar, the world's most powerful secret society. Will Lupin make it in time?
- The scene with Robert and Vivian, two lovers meeting a night under snow in the film who Lupin watches at the beginning, shares many common traits with Tatsuo Aku and Midori Ariyoshi, the main character and the female protagonist in the anime series Tiger Mask II, when finally discover their love in the last episode, aired two years later, on January 18, 1982.