Following a lead from Fujiko, Lupin and Jigen excavate the sea floor in Kiritappu to search for a lost underwater treasure that supposedly holds the secrets of time travel. After the Lupin gang escapes a run-in with the law, a strange man calling himself Kyousuke Mamoh strands the Lupin gang hundreds of years in the past.

What will happen to the greatest thief of our time when he finds himself out of time?

Following a lead from Fujiko, Lupin and Jigen excavate the sea floor in Kiritappu to search for a lost underwater treasure that supposedly holds the secrets of time travel. After the Lupin gang escapes a run-in with the law, a strange man calling himself Kyousuke Mamoh strands the Lupin gang hundreds of years in the past.