You watch two versions of the same person collide, and you can't tell which one is real. Memory stops meaning anything about halfway through. By the end, you're not watching a story about doppelgangers, you're watching the space between who you are and who you remember being collapse into nothing, and it stays with you because it feels less like fiction and more like the thing that happens to everyone when they stop paying attention to themselves.
Built around the theme of the doppelganger, Mirror is an animated film about a single man and his double. The memories, dreams and hallucinations of each are recounted one after another, and as the film goes on, their pasts and futures slowly begin to blend together. Expect an abstract, introspective piece rather than a conventional plot.