In the back alley of downtown, an ordinary high school student Minghai Fujima (voiced by Sadaku Matsuoka) witnessed an emergency. Not long after, he was taken by classmate Caixia to the "Hanamaru Ramen Shop" where she worked. Here, he unexpectedly met the three "suspicious people" of that day-Baiqingge master A Zhe, the "military otaku" major, and the handsome Hong elder brother, who called themselves "Nite detectives". Just when Ming Hai was confused, he came to the "NEET Detective Office" and met a strange girl Alice (dubbed only by Oakura). Alice seems to be a squat at home, but in fact she is a highly skilled network hacker. She uses her ability to accept entrustment and become a Nite detective. Due to fate, Ming Hai became Alice's assistant to help investigate the incident. Can this ordinary high school student with no sense of existence play a role in the Nite detective regiment? What kind of fetters will Ming Hai, who once did not want to have too much contact with others, have with Alice and the people of the Nets?