In the movie, Asterix and Obelix are approached by Princess Sa See, who seeks their help to save the Empress of China and her land from the treacherous Prince Fu. The duo sets off on a long journey to China, where they meet new friends and battle many foes along the way.
Once they arrive in China, they discover that the Prince has allied himself with evil forces and is intent on taking over the kingdom. The Empress is imprisoned and the land is under siege, with the people living in fear.
Asterix and Obelix must use their wits and strength to rally the people and defeat the Prince's army. They also get help from a wise old Chinese man, who shares his wisdom and teaches them about the culture and history of China.
As they progress through their adventure, the Gauls encounter various challenges, including hostile warriors, a mysterious dragon, and dangerous landscapes. But they never lose their sense of humor and their friendship, even in the face of danger.
In the end, thanks to their courage and determination, Asterix and Obelix manage to save the Empress and restore peace to the Middle Kingdom. They bid farewell to their new friends and return home to their village in Gaul, proud of their heroic deeds.