Ben explores the ancient sea roads of the Inner Hebrides, visits Iona, the cradle of Christianity, and learns how Columba's legacy inspires people today.

In the Northern Outer Hebrides, Ben returns to Taransay, the island on which he lived for a year for a TV show 20 years ago.

On the Shetlands Ben meets a Pagan, a nun living a remote monastic life, and a couple who became Christians when they moved there after living as hippies.