Arco develops a fast friendship with a girl named Iris Romy Fay, and the pair ducks conspiratorial weirdos and a legion of automation assistants in a daring quest to jettison Arco back home on the tail of a rainbow. At the center of that resonance is the bond between Iris and Arco, two children whose perspectives open windows into the films headier speculative fiction. Here, the film contrasts Iris everyday reality, where humanity lives in a glorified terrarium alongside one another, with...