Probably the best start of the three Urasawa mangas I've read... while Monster and 20th Century Boys are slow-burn openers, Pluto jumps right into the action, in a futuristic world where robots are common, and someone is murdering them. It starts with the murder of a beloved environmental protection robot in Switzerland and moves on from there, and a robot detective (who is quite reminiscent of the inspector from Monster) is on the case.

It's all based on a classic Astro Boy story, of course, but Urasawa swerves the point-of-view, basing it on the detective (a supporting character in the original) and expanding it greatly into a murder mystery, rather than mostly an excuse to throw Astro Boy up against a more powerful robot that he requires an update to defeat. The original is good, arguably one of the best Astro Boy stories, and it's balls-y of Urasawa to tackle it, but based on volume one, it looks like his ambition will pay off.