The series starts with summer, the Mourne's busiest and most popular season. The mountains are purple with heather and the resorts are bustling with visitors, but the camera travels away from the crowds to reveal a hidden world that many visitors never see.

In this episode, after a busy summer, it is a time for reflection with the arrival of autumn, as Mourne's human and animal inhabitants make preparations for the long winter ahead. The softer light and autumnal palate mean that beauty abounds

Winter is arguably the Mourne's most visually magical season as it is transformed into a winter wonderland.

After a long hard winter, spring finally comes to the Mournes, and there are signs of new life everwhere.