Lupin III: Alcatraz Connection

Lupin III and his gang infiltrate the "Machine Gun Kelly", a casino on a ship owned by the mafia, to steal its money. They successfully break into the vault, but their escape is foiled by Zenigata's intervention. Unbeknownst to Lupin, the ship is also searching for a sunken treasure filled with gold. With Zenigata hot on their heels, Lupin must now navigate a complex web of the mafia, a secret organization based under Alcatraz, and uncover the secrets surrounding the treasure.