Follows mystery-solving college student Kuno Totono. At the beginning of the story, the police bring him in for questioning on suspicion of murdering his classmate.

Totono Kuno is a college student with no friends and loves curry. He always has doubts about what is going on in the society and develops various theories in his mind. One day, he is accused of a murder that he doesn't remember. While being interrogated by the detectives, Totono notices the hints hidden behind the case and the worries the detectives have.