夜深人静，密林中央，两名男子不打招呼闯入胖胖的家中。他们是流动马戏团的团长和员工，正在寻找逃跑的小老虎。刚好胖胖一家不在，他们走进屋里，看到熊猫一家硕大无比的牙刷和椅子，两人吓得要命。就在此时，熊猫爸爸（熊倉一雄 配音）、米米（杉山佳寿子 配音）、胖胖（丸山裕子 配音）返回。两人被眼前的一幕吓坏了，落荒而逃。吃饱饭的胖胖回房间，发现有人动过他的毛巾、小号，还有人睡在他的床上。原来，那就是马戏团逃跑的小老虎（太田淑子 配音）。新成员的到来，让熊猫一家非常开心。
未过多久，大雨降临，洪水淹没了许多地方。而马戏团的动物也面临生命危险……

Notorious thief Lupin the Third aims to steal the lost treasure of the Romanov royal family with his criminal associates along for the ride. The treasure is an immense quantity of gold hidden underground in the vaults of a mysterious Texas bank. But to obtain the gold, Lupin and his friends will have to face down both the Mafia and Rasputon, the telepathic descendant of the mad monk Rasputin. Lupin again eludes inspector Zenigata with the help of a mysterious blonde named Judy Scott, as Rasputon manipulates the world's leaders to put every obstacle in Lupin's path.

1979 film directed by Hayao Miyazaki