Although that description makes the film sound like a David and Goliath story, the actual film is much more human — or perhaps fishy — in scale. In “The Incident at Tower 37,” the battle happens between one human — presumably a very small cog in a gigantic corporate wheel with many many more water towers — and a few tiny fish affected by the water siphoned off by the tower.
The two sides fight — and leaves one side dead. And unlike most such battles in real life, the fish win — though the result is hardly a happy victory. Here’s how Chris Perry puts it in an interview with TakePart:
The ending is truly a Pyrrhic victory for the lead fish. He achieves his original goal, but not without great loss. I do think there is a seed of hope at the end: even despite the tragedy, the fish knows humans are capable of seeing them as the intelligent creatures they are.