On Eriskay, Nick Crane gets unique access to the island's close-knit
communities. Nick has a close encounter with a family of dolphins and he is
invited to a golden wedding anniversary where the whole island gather to party.
On the Isle of Lewis, Nick meets the leader of the Guga Hunters, a small band
of men following the age-old tradition of catching young gannets.

Neil Oliver explores the tragic shipwreck of the Iolaire. On New Year's Eve
1918, over 200 servicemen returning home from the First World War, drowned
within sight of their homes on the Isle of Lewis as the Iolaire was torn apart
in ferocious seas. The disaster is little known outside the Western Isles, but
the community of Lewis still grieve in private nearly 100 years later. Neil
seeks out the last witness who shares her first hand memories of the tragedy.

Hermione Cockburn is on an expedition to Staffa. Armed with an acoustics
expert, a violinist, and a starting pistol, she conducts a curious experiment
to explore the remarkable musical quality of Fingal's Cave.

Miranda Krestovnikoff is on Shetland to search for the shy otters who struggle
to survive on this wild coast. She also ventures out to the tiny Isle of Noss
to see the remains of a remarkable project to breed a super strong Shetland Pony.

Tessa Dunlop is on a deep-sea survey ship to see how the epic voyage of HMS
Challenger first revealed the astonishing secrets of life in the depths of the
world's oceans, a global quest that began with surprising discoveries of
mysterious creatures deep in Scottish seas in the 1860s.