A male pigeon is captured by humans and forced into service as a carrier pigeon. Every day, he leaves the loft to deliver messages and returns when the job is done. But every flight takes him back over the city where he lost his mate and nest.
Small changes begin to break the routine. The wind shifts. A receiver is missing. A familiar nest appears along the route. Instead of simply completing his deliveries, he starts following these signs.
What begins as a routine slowly turns into a search for the life he lost. In the end, he finds something different from what he was looking for and has to choose what comes next.