Mirage is about a creature and the nature. The creature is running out of water so he goes on a trip for some more. He finally finds a plant-looking object, and he figures that he could get some water from it. He does, but in exchange, he kills a fish which lived in the object. He immediately places the fish into his own tank and that's when the fish and he starts to glow. He passes out and when he wakes up he is swimming with the fish in the ocean. I think that what the director was trying to send is the messege that nature co-exists with us living creatures.