I really like this series. However, I have no easily explainable reason for why, but I will give it a whirl anyhow. First of all, CLAMP Campus Detectives lacks any deep themes. But what are you to expect from a story that is based on the concept of hyper-elite elementary school students who run a detective agency for the sake of helping women in distress. The only way that I can describe the charm of this show is: the ultimate triumph of style over substance. So with this in mind, here is a brief recap of the background provided in episode 1.

The CLAMP Campus
The setting for this series is the CLAMP School, rather narcissistically named after the creators of this series. This school has a large pentagram-shaped campus and contains not just an elementary school, but also education all the way through the university level. The instructors are the best in the world, and the students are all super-talented. The school also ensures that there will be adequate funding for any student to attend if he has been accepted. The most important source of funding for this monstrosity of an educational institute is the Imonoyama Conglomerate.

The Detectives
There are three main characters in this series: Imonoyama Nokoru, Takamura Suoh, and Uyuujin Akira. They comprise the elementary school's student council and are all very good students. In addition, each one has his personal talents. Nokoru is their leader and the president of the student council. He is a smooth talker, an excellent detective, and always carries a fan. This young investigator is also the son of the president of the powerful and wealthy Imonoyama Conglomerate. Suoh is the secretary of the student council and has great athletic talent. He is also very good at judo, aikido, karate, and kendo and is the most levelheaded of the group. Akira is the treasurer of the student council and has immense powers of cuteness. He is also a master chef and is good for comic relief.

The Authors
This series was created by a group of four women called CLAMP. They have done many titles and always produce great-looking art, though their stories are sometimes suspect. Other titles done by CLAMP include RG Veda, Tokyo Babylon, Magic Knight Rayearth, and X.