This special follows the story of how Isaki Shuuji and Ruo Minai became Contracted Priest and Shikabane Hime.

Inspector Zenigata has been removed from the Lupin case which leaves him despondent, and he ends up drinking with Lupin & Jigen. Lupin decides that he and his gang should work with Zenigata to solve his new case, investigating a group of arms dealers known as Shot Shell. Lupin gathers his partners together (Jigen, Goemon, & Fujiko), and with Zenegata they steal a Russian submarine. They kidnap a scientist named Karen Korinsky to help them operate the sub, and also to protect her from Shot Shell. Meanwhile the ICPO assigns a man named Keith Hayden to the Lupin case, and unlike Zenigata he wants Lupin and his group dead. Where ever Lupin and friends go, Keith follows, as the officer attempts to pick them off one by one. 

(Source: ANN)

Mao Lan continues growing into her path in life through what she learns while fighting. Her grandfather thinks that she has grown complacent and decides to train an adversary for her next Prime Mat appearance. Training with her friends and companions Mao Lan slowly advances through life. (Source: AniDB)

Lupin has become a suspect in the murder of a professor named Theo Argent. The professor had just discovered the missing page of Marco Polo's Record of Observations of the East travel journal. As Lupin is being pursued by the police, he ends up getting unlikely help from the granddaughter of Theo Argent, Lisa. 

(Source: ANN)