World of Tomorrow Episode Three: The Absent Destinations of David Prime

I am a big fan of the previous two World of Tomorrow installments so I was looking forward to this one. The animation is even better than before, the humour is quirky, the science fiction concepts are creative and the emotions are poignant. However, the story was a bit messy. By now there are so many clones of David and Emily that their interactions become a chore to keep track of, especially with all the time travel. The significance of personal memory becomes drowned in a convoluted quest with the Davids all trying to replace each other.