There is a fine line between happiness and unhappiness.
This is the moving story of one corner of the metropolis.

In Tokyo, there is a secondhand bookshop called Tsukumo Do. Deep inside this bookshop is a room called the "meeting place." There, people who have nowhere left to go gather.
The owner Sakura Tsukumo serves them oyakodon gratis and without prying. She not only fills their bellies, but warms their hearts as well… And then, those people begin, little by little, to talk about themselves. Sakura listens, sometimes encouraging them with a smile, sometimes shedding tears along with them. "When you want to cry, cry. A flower of happiness will bloom for every tear you shed." That is Sakura's favorite phrase. For example: a boy who, although poor, lives cheerfully and earnestly after being released from reform school for the sake of his little sister. A single mother who spends every day fretting: "If only I didn't have this child." A woman teacher who worries about an eating disorder caused by a complicated home environment... The real emotions of people alive now are thrown into relief. In their midst, Sakura herself will come to face her own tragic past. What happened 16 years ago that inspired Sakura to give out free oyakodon? Azami Ninomiya, a girl who visits Tsukumo Do one day, is turning back the clock.


「流した涙の粒だけ幸せの花が咲くの」

東京・大田区。羽田空港にほど近い、下町とも言える雑多な雰囲気の中、ぽつんと一軒の古本屋「九十九堂（つくもどう）」がある。
漫画を中心に揃え、幅広い世代が訪れる店の主人・九十九さくら（真矢ミキ）は、少し変わった毎日を送っていた。
古本屋の奥には「たまりば」と呼ばれる一室が。そこには、どこからともなく“行き場を無くした人々”が集まる。
すると、主人のさくらは、深く詮索するでもなく「親子丼」を出す。相手が誰であろうと無料。それがうまい。お腹を満たすだけでなく、心まで温めてくれるような・・・。
空腹が満たされた“行き場のない人”は、少しずつ、自分のことをさくらに話し始めるのだ。それをさくらは聞く。ある時は笑顔で励まし、ある時は共に涙を流しながら。
「泣きたいときは泣けばいい。落とした涙の粒だけ幸せの花が咲くんだから」それがさくらの口癖だ。
今日もまたひとり、ふたりと、現代社会からはみ出してしまいそうな人間が、九十九堂を訪れる。
少年院出所後、妹の夢のために貧乏ながらも明るく懸命に生きる少年。「この子さえいなければ…」と日々悩み続けるシングルマザー。複雑な家庭環境から摂食障害に悩む女性教諭。会社で居場所を失った自閉症の男性。今を生きる人々の、様々な事情、リアルな感情が浮き彫りになっていく。
そんな中、さくら自身もまた、悲しい過去と向き合うことになる。
さくらが親子丼を無料で振る舞うきっかけになった、16年前の出来事とは。ある日、九十九堂を訪れた一人の少女・二宮あざみ（吉本実憂）が、時計の針を巻き戻していく・・・。

Tokichi Inaba is an ordinary businessman who cannot oppose his wife. One day, he happens to meet a brilliant hitman called Nicho. He suddenly orders Tokichi to kill his target and save his woman, and he says if Tokichi fails to save her, he will kill Tokichi and his entire family...
Tokichi is suddenly caught up in a major incident. What is his fate going to be?
He leads a "two-faced" life as a businessman and a hitman, but at the heart of his life there is a "love for his family" to protect them.