mary mercer, at fifty, is a devoted mother and wife who has her hands full with her three men. together with the us air force air command operated the distant early warning line of radar stations on the edge of canada's arctic north. she was the first female doctor of western medicine in japan. these originally carried signal arms and kerosene lanterns, but they now display electrical lights. the rules are also changed regarding the batting order. he claims to be rescuing her, but she knows that she does not love him. 