Following the public hysteria following the broadcast of the Shed 17 documentary, further revelations are uncovered about the events on Sodor Island in the early 80's. However, a much more sinister force threatens the remaining engines of Sodor Island. Following the revelations of an anonymous whistle blower, a shocking series of events will lead to disaster. Follow Keith Hartley as he guides us through another magical story of love, betrayal and ambition.