On the third leg of his adventure, Billy goes onboard a cruise ship to make the eight day journey through the Northwest Passage and he meets the people who live in this remote, isolated part of the world which spends nine months of the year surrounded by frozen sea.

He learns about the explorers whose footsteps he is following in and visits the sites where they lived and died. He then moves south and hitches a lift with an ice-trucker before panning for gold at the site of a great gold rush.

Billy starts the third part of the series in Resolute Bay – a weather station that is so cold that snow is on the ground at the height of summer. Here he boards the Akademik Ioffe, a Russian cruise ship with 100 tourists to begin the voyage at the heart of his journey – through the Northwest Passage.