When Amy Liptrot returns to Orkney after more than a decade away, she is drawn back to the Outrun on the sheep farm where she grew up. Now she finds herself standing at the cliff edge, trying to come to terms with what happened to her in England. Spending early mornings swimming in the bracingly cold sea, days tracking Orkney's wildlife - puffins nesting on sea stacks, arctic terns swooping close enough to feel their wings - and nights searching the sky for the Merry Dancers, she slowly makes the journey towards recovery from addiction.