马蒂（凯瑟琳·海格尔 Katherine Heigl 饰）的恋人在一次意外中失去了生命，怀着恋人的孩子，马蒂不知道今后的生活该何去何从。此时，一个名叫克拉克（戴尔·米德基夫 Dale Midkiff 饰）的男人出现在了马蒂的面前，他以给孩子找个母亲为由向马蒂求婚，并允诺会在来年春天付给马蒂回城的旅费，迫于生计，马蒂答应了。 　　幸运的是，克拉克是一位正人君子，他对马蒂以礼相待，绝不做任何非分之举。可是克拉克的女儿却并不像她的父亲那样，对于凭空出现的“母亲”，她产生了强烈的排斥心理。随着时间的流逝，马蒂的温柔和开朗逐渐的化解了她和继女之间的坚冰。暴风雪过后，春天很快就要来到，眼看约定好的离别的日子越来越近，马蒂和克拉克的心中都充满了依依不舍的情怀。Aaron Claridge dies while leading his pregnant wife Marty, an East coast teacher, on the wagon trail to the West. Destitute and unprotected, she accepts a marriage of convenience with widower Clark Davis to help raise his brat daughter Missie all winter, in spring he's prepared to pay for her return. Missie is hostile to 'mother substitute', but as the months pass Clark achieves a rapprochement.