Perfectionist thirty-something bank clerk Motoko is weighed down by the burdens of the world. Unsuccessful cartoonist Kizuna has withdrawn into herself after losing a twin sister. Child of divorced parents and an absent father, ambitionless 20-year old Yuka questions the point of life as her father leaves her the job of being the landlord of his run-down, wooden boarding house. A strict anthropology professor on campus and a mysterious, matriarch boarder, Yumiko has veiled her past while worriedly watching Yuka grow from a rosy-cheeked baby girl into a despondent youngwoman. What everyone has in common is that they all face a crossroads in life and dwell in the shabby boarding house. Her friendship with colleague Mariko forces Motoko to re-evaluate her values and outlook on life, as she shockingly finds out that Mariko has taken a wrong turn in life by embezzling 3 million yen of the company funds and is on the run. Watching Yumiko live life true to herself, the other women are gradually able to choose a path that will allow them to pursue their own interpretation of happiness.

早川基子（小林聡美 饰演）是独生女，34岁仍住在家中，在一家信用金库工作了十六年，一直未婚，在家里被母亲管束，工作也是一日一日的简单重复，对这样的人生感到迷茫。龟山绊（友坂里惠 饰演）是个没有名气的漫画家，对人情世故已厌倦，与人接触觉得即麻烦又害怕。

从这个时代脱离的两个人，在一家也被这个时代脱离的供膳食的公寓「快乐三茶」邂逅，开始了在这个公寓的生活。

公寓另外住着两个人，不时影响着她们两个人。似乎对这世界已看透的年龄不详的大学教授崎谷夏子（浅丘琉璃子 饰演）和对人生充满热情而乐观的房东芝本友香（市川实日子 饰演）。还有突然带着信用金库的3亿日元出逃的好友兼同事马场万里子（小泉今日子 饰演）。

她们在公寓一起生活当中重新审视自己的生活，一点一点成长，各自踏出新的一步。这是一部用充满幽默的笔法描写剧中各个人物的人生模样的温情电视剧。