A neatly dressed, polite and optimistic young "Girl with Black Hair" is out drinking at a party but soon finds herself going on an adventure in Pontocho as she moves from place to place during the after party, meeting various people from all walks of life. Meanwhile, her "Senpai (Senior)" who always had a crush on her tries to win her heart but ends up going on a not so great adventure himself as he pursues her. It turns out to be one eventful night for them as everyone they meet finds their lives intertwined by the threads of fate as the girl journeys through the night. Even supernatural spirits.

It's a bunch of silly scenarios put together that's loosely centred around adult life, drinking and socialising. The scenarios feel random but there's also a certain charm about how the lives of the various characters the girl meets are tied together by her little adventure through the night. It kind of turns into a kind of Alice in Wonderland story...

The show is filled with adult jokes and doesn't shy away from showing off pieces of Hokusai's traditional erotic art (censored with flowers). Art style's clean and simple, not your usual Anime show style that's detailed but still fun to watch thanks to the lively characters and comical movements. You can't miss a movie with someone who uses a "friendship punch" for self-defence.