This film is a documentary account of Operation Sea Otter Transplant, a joint effort of the U.S. Atomic Energy Commission, the U.S. Department of the Interior, and the Alaska Department of Fish and Game to relocate sea otters and reestablish them in their former ranges. The otters were airlifted from Amchitka Island, a site of AEC underground nuclear tests, to Southeast Alaska and the Pribilof Islands.