Despite their differences, New York magazine editor Larry Blake and Ski Lodge, Idaho ski instructor Karin Borg fall in love and get married within hours of meeting. Those differences are Larry being urban to the core, he not having had any desire to learn how to ski until he laid eyes on Karin, while Karin is an outdoors girl to the core, her life all about healthy living. In the sober light of day, Karin learns that Larry's vow to leading a healthy outdoor life in Ski Lodge and hating his life and job in New York was just pillow talk in that he not only has no intention of giving up that life but demands she move with him back to New York in stating his life more important than hers. While this impasse seems on the surface to be the end of their marriage before it even begins, there is one problem: they still love each other. So while Larry vows to make it back to Ski Lodge to be with her as he returns to New York to resume his work, one issue after another postpones his return. As such, Karin decides to surprise him by flying out to New York, adorning herself in New York finery in the process. But when Karin catches Larry back in the embrace of a former girlfriend, playwright Griselda Vaughn who in turn knew that Larry is married but doesn't care in resuming their relationship, Larry's personal secretary Miss Ellis comes up with the idea that Karin should pose as her morally depraved but urban chic twin sister Katherine Borg to allow Karin to keep an eye on Larry clandestinely while in New York, while showing him up in the process. Complications ensue when Larry believes he has conclusive evidence that Karin and Katherine are one in the same, he who plans to show her up in return.