The first thing you should know about Zaion is that it only has four episodes, two per DVD. Zaion was originally planned to be released over the internet as a "Web-series" but the directors though that it would do better offline. One major 'new' featue that Zaion offers is that it combines CG graphics with cel animation. Sometimes the blend is perfect, other times, not. Anyway, on with the review! Zaion is a four episode show about Yuuji and Ai. Yuuji works in the NOA division of military (Nano Osmolar Armor) which is one of Earth's best line of defense against the M34 virus strand. The M34 virus came from a meteorite which crashed to Earth. The virus attacks one's DNA and causes the person to mutate into horrible, Resident Evil like zombies. However, the NOA's have Nano Machines in their system. Whenever they're in danger, the Nano Machines come to the surface of their skin and forms a layer of protective armor that can transform. Ai is a young girl that has psyic powers. She can harness them with the Engine, which tranmits a holographic image of Deva, a being that can is made of pure energy. I won't spoil the series for you, but let me just say that a lot can happen within 2 hours!