 A bridge bomber has been blowing up several bridges under Lupin s name. The actual Lupin and Jigen investigate on who this bomber is. They studied the bomber s pattern and found out that his attempt is to force an armored truck to take alternate routes so he can steal the money. When Lupin and Jigen locate the bomber, they end up getting caught in a trap. Now the bomber wants them to help out on his attempt to explode the seventh bridge and retrieve the money. He knew Lupin won t corroborate with him so he showed Lupin that if he refuses, he ll kill a young girl he kidnapped. Lupin didn t want to see an innocent girl get killed so he ll corroborate with the 7th bridge attempt. But can Lupin and Jigen finish up a job they weren t involved with in the first place and save a life of a girl, Lupin hardly knows about?