Lupin III: Alcatraz Connection

A criminal mastermind runs a floating casino on his ship while seeking a valuable sunken vessel filled with gold. Lupin and his allies join forces to stop the operation and seize the treasure for themselves. Their mission coincides with an investigation led by a persistent law enforcement officer, who teams up with a local police partner to track Lupin. During their pursuit, they uncover a hidden connection between a notorious island prison and a mysterious criminal organization known as the Secret Seven.