Interesting film. A bit too convenient where the main character happens to be studying in a field related to what goes down in this movie. It reminds me a lot of Junji Ito's Gyo but a lot less disturbing.
Basically some microbes that were sitting in the depths of the ocean made their happy way to the surface and changed all lifeforms that inhaled it. At least that's how it looked to me.
Cool story but a bit too artsy for me. In the end, the moral of the story is...don't eat marijuana chocolate.