第三弹将主打家人与铁道的故事，主角奥薗晶（有村架纯），在25岁时和带着孩子的修平（青木崇高）结婚，三人幸福的生活，然而，丈夫突然辞世。晶带着孩子来到了丈夫的故乡鹿児岛，拜访公公奥薗节夫（国村隼）。 晶决定当一名 列车驾驶员，和她的公公节夫一样，但节夫强烈反对她的想法。在晶和热爱铁道的孙子的努力下，节夫慢慢转换了想法...3人也在摸索中，直面失去最爱家人的痛苦，逐渐建立了新的家人的关系。Akira is widowed and left with a pre-teen stepson. Travelling with him to her late husband's hometown, she meets her odd father-in-law and yet decides to make a go of living and working there. She attends training and joins the railway company where her father-in-law works and her late man dreamt of ending up as a child.