In this surreal odyssey, a young boy walks through a series of doors opening up visions of the past and future. “Mi,” made by Masayoshi Nakamura and Zak Engel, is beautifully animated, vibrating with color, shape and possibility. Emerging from abstract geometric landscapes, we lock in on a boy with his father embracing in the middle of a rainy forest. Soon they are descending to the bottom of a lake to discover a hidden city. There, the boy enters a door and finds himself walking through his father’s memories, or maybe it’s his own future, or somehow both.