Takahashi Takeshi, a 17 year-old guy lives in Minato, Tokyo; frenzies never stop there. He gets sick of it and moved to his clan’s territory: Shinagawa, Tokyo. When he got there, he met once again Suzuki Rikuu, Suzuki Akari, and Kato Ichika. The four of them were the protagonists in the story. Together with their clan, they solved crimes and mystery; they didn’t stop until the local Tokyo blamed them for a crime. They now need to conceal themselves while solving mysteries and crime. Their main goal as a clan is to stop the biggest crime empire in Tokyo and kill the crime facilitators.