I loved the original series, lost track of Legend of Korra after season one and I couldn't watch it anyway because my cable company removed Nickelodeon, but what I saw was good. I'm in, but I'll need a summary of what happened in the series.

Also, has technology advanced even more than it did in Legend of Korra? Just wondering, because I had an idea for a character who would revolve around his marksmanship and engineering skills.