An arty Japanese movie, undubbed. Not for those who don't like reading subtitles, therefore. But it's pretty OK.
The protagonist is Ryôta, who's kind of a mess. He used to be a novelist, publishing his first book to critical acclaim, but didn't manage to follow up. He's now a private investigator, and not an honorable one: when he gets the goods on a cheating wife, he and his partner offer to keep the news from their client, her husband, for a price. Sleazy!
He's also divorced, with a cute son. And due to a nasty gambling habit, he's behind on his child support payments.
(Did you know that in Japan, they bet on bicycle races? Neither did I. But don't worry, Ryôta also buys lottery tickets, a more American tax on irrational innumeracy.)
There's also a meddling (but very sweet and funny) mother. And an impending typhoon.
It's a pretty good movie to remind us of a couple things: first: Japan is wonderfully weird. But second: not that weird; everyone here operates with emotions and motivations and foibles that are instantly recognizable to any red-blooded American. That's sort of comforting in these "diverse" times.