How did this young boy become the notorious gentleman thief "Lupin III"? Loosely based on Young Lupin III from the original manga, Lupin Zero presents a nostalgic yet entirely new original story, finally lifting the veil on Lupin III's humble beginnings. Set during the era when the original series was first published, the anime depicts Young Lupin III roaming the streets of 1960s Japan amid the country's economic boom. A young boy ascends the staircase to villainhood. What was he thinking, and what steps did he take? This is the untold origin story of the world's greatest thief.