You know a series is great when book 2 is better than book one and this series is so freaking awesome . We go back to more of the seven robots being destroyed.  We also get to see a little bit of the character Astro boy (he’s actually called Atom,  which is explained in the back).  You could pick this up without having read book number one but number one makes it quite a bit better and gosh dang that I can’t wait for book 3 and four time to go put them on hold