From Yen Press:

When the minister of construction’s grandson disappears amid protests against the dam project in Hinamizawa, Detective Akasaka is sent from the Tokyo Police to investigate. Posing as a tourist, Akasaka becomes fast friends with Rika Furude, and the little girl almost makes him forget that he’s on a mission to find a kidnapper! But the sightseeing tour takes a sudden turn when Rika delivers a grave warning: Leave Hinamizawa…before you come to regret it…

The story of Higurashi no Naku Koro ni is divided into a total of eight chapters: four "Question" arcs and four "Answer" arcs. Each chapter keeps the same main characters, but ends in a different way. However, each chapter gives valuable answers, hints, and clues to the previous one, while at the same time bringing forth even more mysteries.

The question arcs are:
1. Higurashi no Naku Koro ni - Onikakushi hen
2. Higurashi no Naku Koro ni - Watanagashihen
3. Higurashi no Naku Koro ni - Tatarigoroshihen
4. Higurashi no Naku Koro ni - Himatsubushihen

The answer arcs are:
5. Higurashi no Naku Koro ni Kai - Meakashihen
6. Higurashi no Naku Koro ni Kai - Tsumihoroboshihen
7. Higurashi no Naku Koro ni Kai - Minagoroshihen
8. Higurashi no Naku Koro ni Kai - Matsuribayashi-hen

The side story arcs are:
- Higurashi no Naku Koro ni - Onisarashi hen
- Higurashi no Naku Koro ni - Yoigoshi hen
- Higurashi no Naku Koro ni - Kataribanashihen
- Higurashi no Naku Koro ni Kai - Utsutsukowashi hen
- Higurashi no Naku Koro ni - Kokoro Iyashi hen
- Higurashi no Naku Koro ni - Hirukowashi-hen
- Higurashi no Naku Koro ni Jan - Tsubamegaeshi hen
- Higurashi no Naku Koro ni Rei - Saikoroshi hen