Set before the meeting of Lupin and Rebecca. Rebecca and Robson are being held hostage on a bomb-rigged train by crazy fans. Lupin goes to rescue them because Rebecca holds a hint of the treasure he is trying to steal. On the way, Zenigata tries to block Lupin's path and by accident they become handcuffed together! Will Lupin be able to rescue Rebecca safely?

それはルパンとレベッカが出会う前の物語。熱狂的なファンによって誘拐されてしまったレベッカを乗せて暴走する列車。ルパンは盗もうとしているお宝のヒントをレベッカという女が握っているとして、レベッカ救出へ向かう。その途中でルパンの行く手を遮ろうとする銭形。ひょんなことからルパンと銭形は手錠でつながれ離れられなくなってしまった！！ 果たしてルパンは、レベッカを無事救出する事ができるだろうか？

Antes do encontro de Lupin e Rebecca. Rebecca e Robson são mantidos reféns num comboio armadilhado com bombas por fãs malucos. Lupin vai resgatá-los porque a Rebecca tem uma pista do tesouro que ele quer. Pelo caminho, Zenigata tenta apanhar Lupin e por acidente eles ficam algemados juntos! Será que Lupin conseguirá resgatar Rebecca em segurança?