A middle-aged bachelor adopts a little girl when she is rejected by the rest of his family.

Like a plot out of a soap opera, bachelor Daikichi Kawachi's boringly normal life got a touch of the abnormal when he learned that his late granddad left behind a love child. And further rattling the unexpected skeleton in the closet? The ungainly, unglamorous Daikichi's impulsive decision to take in little Rin! But as the impromptu dad and his charge learn to adapt to both one another and their very new living situation, Daikichi is plagued by thoughts of Rin's mother. Who is she? Why has she been quiet all this time? Hot on the trail after discovering a modem at the old man's computer-less abode, Daikichi plays detective in search for answers. But elementary school enrollment, extracurricular activities, and other parental obligations wait for no man, so when the day of confrontation with the mysterious Masato arrives, will Daikichi be prepared?!