St. John's Head on Hoy, a rugged 1150-foot sea cliff, was first climbed in 1970 by Ed Drummond and Oliver Hill, a seven-day journey spent sleeping on ledges and in hammocks. Forty years later, renowned climber Dave MacLeod attempts the climb in a single day, tackling a new, extremely difficult final pitch. The film uses high-definition cameras to capture MacLeod's historic ascent, contrasting it with accounts and archival footage of Drummond's original climb. It also follows Drummond, now in his late sixties and battling Parkinson's disease, as he returns to St. John's Head for a final look at the route.