I was so excited to see Ka. I had heard so many great things about it. Last year I went to see my first Cirque show ever, Love, and I loved it. Ka is the story of a brother and sister who are separated after their kingdom is attacked. There is a love story interspersed in the plot though it's not very believable and just seemed to detract from the show as a whole. Basically, the love story was a bit of a plot mover rather than something explored.
The costumes were great and everything was well choreographed. However, at times I felt that it was monotonous. "Oh hey, another fight scene on the moving wall". The most disappointing thing was the climax. I understand that the performer died last year, that's a terrible tragedy. However, instead of altering the scene and having them perform on a level surface, they just made up a CGI of the characters fighting on the vertical wall. It was blurry and you couldn't tell what was going on.
I actually think Love was better.