Lupin, Fujiko, and Jigen are hired by a crime lord from Hong Kong to retrieve a mythical dragon statue that was lost with the Titanic. However, the artifact is an invaluable possession of Goemon's family, and it is rumored to possess power surpassing even his formidable Zantetsuken sword. Goemon pledges to defend the statue from any harm, even if it means turning against his former allies and resorting to extreme measures.