[Title: Down the Mackenzie to the Arctic Ocean]: FOLLOW MS of motor schooner "Medico" sailing on Mackenzie River. LS PAN from Resolution settlement on shore of Great Slave Lake, to seaplane. Shots of school, of Inuit children entering school. BOATING LS of buildings in Providence settlement. LS of column of smoke from bush fire in the distance. CS of pilot and friend seen through glass of cabin of boat. LS of Hudon's Bay Company supply ship sailing by. PAN along buildings of post in Simpson. LS of Hudson's Bay Company post at Norman. LS PAN of Norman from top of hill to MS of Inuit children walking towards camera. Shots of Major LT Burwash and GH Blanchet boarding Fairchild seaplane. HAS of plane taxiing away, FOLLOW SHOT as it flies past. Various BOATING SHOT along shore of Mackenzie River showing tent camp, men waving at camera, settlement, Hudson's Bay Company post. LS of site where oil was discovered in 1921, shots of abandoned shacks, of test drill rig, of derelict installations. Shot of man in swimsuit wading towards Medico to make a few repairs. HAS of Medico sailing by. LS of ramparts of lower Mackenzie. [End Title: End Part 1; Titles and animated maps interspersed]