The Edge of the World

Robbie fell to his death during the cliff race because he lost his footing while competing against Andrew. The race was organized to settle the community's disagreement about whether to evacuate the island, and Robbie, who had been advocating for evacuation, was attempting to prove his courage. When he fell, Andrew won the race but was left with lifelong guilt over his friend's death.

Robbie's ambitious nature and desire to leave the island for the wider world had already created tension with the older generation who wanted to stay.

Andrew left Hirta for Lerwick on the mainland because he was overwhelmed with guilt over Robbie's death and felt rejected by the community. Robbie's father, who had previously supported Andrew's relationship with Ruth, now blamed Andrew for his son's death. Combined with the emotional burden of losing his friend in such tragic circumstances, Andrew chose to start fresh on the mainland.

Andrew's victory in the race, while technically fulfilling the island's tradition, came at a devastating cost that changed his life permanently.

Andrew couldn't receive news of Ruth's pregnancy because communication between Hirta and the mainland was extremely limited. The only method of contact was via driftwood messages, pieces of wood sent across the sea carrying brief updates. By the time Ruth gave birth to their daughter months after Andrew left, he was already on the mainland and unreachable through these primitive means of communication.

Ruth's secret pregnancy was known only to her family, and the isolated nature of island life meant this news would have difficult consequences once revealed.

Andrew was rescued from his journey to the mainland by a fishing trawler captain named George Summers, who braved a fierce gale to reach Hirta when news of the baby's life-threatening condition reached him. Upon arriving, Andrew found the newborn suffering from diphtheria and performed a life-saving tracheotomy just in time to secure the child's survival. This dramatic rescue brought Andrew back to the island at the crucial moment.

Ruth's newborn was already vulnerable from the harsh conditions of island life, making the threat of disease even more dangerous.

The islanders had to evacuate Hirta because their traditional way of life had become unsustainable. Crops failed repeatedly, and the peat supplies, their only fuel for heating and cooking through harsh winters, were nearly depleted. With no viable means to survive the coming winter and no prospects for recovery, the community made the difficult decision to accept government assistance and resettle on the Scottish mainland.

Andrew's father had already suspected that the island's way of life was coming to an end, foreshadowing the eventual evacuation.

Peter Manson climbed down the steep cliff to collect a guillemot's egg because a collector was offering payment for it. Despite the inherent danger of the climb, Peter was motivated by the financial reward the egg could bring. During his ascent, the rope he relied on frayed and snapped, causing him to fall to his death on the rocks below.

The harsh reality of economic desperation on the dying island drove inhabitants to take dangerous risks just to survive.

The gravestone perched on the cliff edge serves as a narrative frame for the entire film. At the start, the yachtsman discovers this gravestone, which sparks Andrew's memories of the island's past. At the end, after Peter's fatal fall during his egg-collecting climb, we learn that Peter's gravestone is the exact same one seen at the beginning, meaning the film depicts events that occurred in the past, and the island is already deserted by the time the yachtsman arrives.

The opening gravestone is a visual spoiler that reveals someone from the story will die on the cliff before the final evacuation.

After Andrew saved his daughter from diphtheria through the emergency tracheotomy, he decided not to return to Hirta because he recognized that their future lay elsewhere. Having witnessed the island's deteriorating conditions, failing crops and depleted peat, Andrew understood that the community would soon be evacuating anyway. Rather than staying on a dying island, he chose to start fresh with his family on the mainland where opportunities existed.

Andrew's earlier departure to Lerwick had already planted the seed of his eventual permanent resettlement away from the island.

The cliff race was a traditional test of courage used by the islanders to settle serious disagreements within the community. When Robbie proposed that the entire island should evacuate to the mainland, the community was deeply divided. To resolve this dispute, they held the dangerous cliff race, the winner's position would be accepted as the community's decision. Andrew won, but the victory was overshadowed by Robbie's fatal fall, making the tradition tragically consequential.

The cliff race tradition reflected the islanders' reliance on ancient customs to navigate modern dilemmas.

Robbie wanted to leave Hirta because he aspired to explore the wider world beyond the isolated island. He had been working outside the island and met a Norwegian girl named Polly, whom he intended to marry. Robbie believed that the island's way of life was ending and that the community should proactively evacuate rather than wait for disaster. His engagement to Polly represented his hope for a new life elsewhere.

Robbie's encounters with outsiders during his work abroad had exposed him to possibilities the remaining islanders had never considered.