This series sees master thief Lupin III and friends, sharpshooter Jigen and samurai Goemon getting into a number of scrapes in Italy and San Marino. Inevitably where Lupin goes sometime lover, sometime rival Fujiko Mine and Interpol officer Inspector Zenigata can't be far behind. Over the course of the series he gets into many single episode adventures as well as having some plotlines that run through the series. Key among these are the introduction of wealthy thrill-seeker Rebecca Rossellini, who marries Lupin in the opening episode; Nyx, an MI-6 agent and a rather surprising famous Italian whose identity I won't divulge.
I really enjoyed this series; the regular characters are nicely established and keep the classic look rather than making them look more like the standard characters of today. Things started really well with Lupin and Rebecca's wedding... something I was not expecting then continued with a succession of enjoyable adventures. These adventures provide the great mix of comedy and excitement. The Italian setting is used well incorporating plenty of interesting locations. The animation and backgrounds are impressive. I went back to this series after watching 'Part Five' and would say they are of a similar quality although I slightly preferred this season. Overall this is definitely one to watch if you like other Lupin films and series.