Documentary about a spring day on the Hebridean islands of Colonsay and Oronsay. The islands are alive with wildlife, as seasonal migrants such as the corncrake have arrived from Africa and residents such as otters and the red-billed chough hunt for food. For the hundred or so people who live and work on the islands, spring is a great time of year - oyster fishermen can now work in calmer waters, and farmers are busy with new lambs.