YokoMatsuda (Miho Kanno), a 27 year old girl with a very bad personality, lives an unfortunate and unhappy life. Born unwanted, her father is unknown, and she has never received love fromhermother.Because of this situation,Yoko grew up with a bad personality.She was mean and gloomy, and she'd have a fit if she didn't get what she wanted. One day, after being dumped by her boyfriend,Yoko gets sick of her unfortunate life. She goes to a bridge and jumps into the river...Yuji Kataoka (Koji Tamaki), a former detective, had been assigned to his new department.He lost his wife three years ago, and as a father of three,he chose to transfer to a department without overtime working so he can spendmore time with his children. One day, while drinking with his co-workers Yusuke Yaginuma (Hiroki Narimiya) and Hideki Iizuka (Fumiyo Kohinata), a drenched girl came in barefoot. After drinking up a glass of beer, she fainted suddenly.Yuji took her to the hospital, and had then found out that she had tried to commit suicide.Waking up in the hospital,Yoko realized that she was unidentified. Thinking she might be able to live a different life, she pretended she lost her memory.Yuji, not wanting her to ever commit suicide again,decides to take care of her until hermemory recovers.Taken to the Kataokas, Yoko sees love, laughter, and warmness filling the family. All of what Yoko had never experienced in her life. Although she hates children and dogs, she starts her new life with the Kataoka family.A heart-warming story about a lonely, unloved girl who suddenly starts a new life with a family full of love and happiness. A story that started form a lie turns into an unexpected ending...

松田洋子（管野美穗 饰演）是27岁的老龄女孩，脾气暴躁，过着倒霉、不幸的日子。在不被期待中出生，不知父亲是谁，也从未享受过母爱。由于环境造成，暴躁的脾气陪伴她成长。她性格怪癖、忧郁，如果得不到想要的东西，就大发脾气。有一天，被男友抛弃之后，她自我怜悯起自己的不幸身世，于是她走上一座桥，并从桥上跳进河里，试图自杀。
片冈优二（玉置浩二 饰演）是个刑警，被分配到新部门。三年前，失去妻子之后作为三个孩子的爸爸，他选择了一个没有加班的部门，这样可以花更多的时间和孩子们相处。
有一次，和同事柳沼佑介（成宫宽贵饰演)、饭塚英树（小日向文世饰演)一起喝酒时，浑身湿透的女孩儿赤着脚进来，喝完一杯啤酒之后她就晕倒了。优二带她去医院，发现她试图自杀过。而等她在医院醒来之后，才意识到周围无法弄清自己的身份。她暗自想借此或许可以过着跟以前完全不同的生活，干脆假装失去记忆。优二决定照顾她直到恢复记忆，且可以防止她再企图自杀。被带到片冈家之后，洋子看到的是充满爱和笑容的温暖的家。而这一切都是她从来没有经历过的。尽管讨厌孩子们和狗，她还是和片冈一家过起了新的生活。一个暖人心的故事，描写了孤独，不知爱为何物的女孩子和一个充满爱和幸福的家庭开始新的人生的故事。一个从谎言开始的故事以意想不到的方式迎来结局…