青年荒井健史（妻夫木聪 饰）此前一直照顾姨婆多喜（倍赏千恵子 饰）的生活起居，多喜年轻时曾在东京帮佣，如今在健史的纠缠下，她提笔写下了陈年的悲喜往事。那要回溯到昭和初期，年轻的多喜（黑木华 饰）离开山形老家，几经辗转进入平井家担任女佣。平井家在东京郊区盖了一栋红色屋顶的小房子，男主人（片冈孝太郎 饰）是玩具公司常务，女主人时子（松隆子 饰）雍容美丽。多喜对时子充满敬仰，她更全心全意为平井家服务。某年春节，玩具公司新来的设计人员板仓正治（吉冈秀隆 饰）走进平井家门。相近的趣味和爱好让他和时子愈加投机。与此同时，战况日渐激烈，有情男女藏着彼此的秘密，随波逐流…… 　　本片根据中岛京子第143回直木赏同名获奖作品改编。Following the death of the unmarried and childless Taki, Takeshi, a young relative of hers, discovers several pages of closely written lines in which the old lady has recorded her memories. This is how he learns the truth about her youth working as a housemaid and nanny for the Hirai family in a little house in Tokyo with a red gabled roof.