Mirage

the main character is a robot which cannot live without water. it is  problem that there aren't enough water to supply all creature in the world. especially, when the main character found a tree which looks like having enough water, a conflict begun. that is, the robot conflicted with himself whether he take in water and live in behalf of a tree or not. after he took water by having broke  tree's fruit, a fish appeared. that is a symbol of  new life. the robot solved a problem of water shortage by breaking the fruit, and he decided to save a new life. i think the setting is our future planet. i wonder that the film maker wants to convey us that we shouldn't use resources in vain, and he sure to warn us not to do so.