A young woman pilot assists a federal investigator in probing illegal seal fishing and related crimes, leaving domestic routines for airborne investigations that carry her toward the Bering Sea. Along the way she encounters eccentric clients, aviation colleagues, and escalating hazards as the inquiry moves from coastal flights to remote islands. The narrative combines flying sequences, investigative procedure, and maritime mystery, with a focus on resourceful teamwork, risks of enforcement at sea, and the challenges of tracking poachers in isolated, weatherbound regions.