A high school student's mother passes away leaving her alone with her grief. The girl, Marimo, discovers the name of a father she never knew. Marimo sets off to meet him, but is completely shocked when she finds someone very different from the father she envisioned. Her father, Shinpei, a 38-year-old would-be private detective, is shocked too, and doesn't believe her until he sees the paperwork. With Marimo muttering "The worst father in the world"and Shinpei lamenting the loss of his freedom, these two are about to learn how difficult and rewarding a father/daughter relationship can be.

Cast
* Ueto Aya as Mochizuki Marimo
* Sakurai Sachiko as Inoue Asami
* Kitamura Kazuki as Kirishima Shinpei
* Yanagisawa Shingo as Okamoto Shousuke
* Matsushige Yutaka as Hosono Issaku
* Kitagawa Hiromi as Anzai Wakana
* Tsugumi as Ran
* Matsuda Satoshi as Shibata Jun
* Kobayashi Chiharu as Nihonyanagi Non
* Ichihara Hayato as Rintaro
* Sawajiri Erika as Satsuki
* Kohinata Fumiyo as Sotokoba Syuji
* Enami Kyoko as Terasawa Tamami
* Watanabe Ikkei as Sadoi Hideki
* Kobayashi Nenji as Konari Daigoro