Our mind works beyond reasonable doubt. It has the capacity no one knows, the crown above all royals, the key to certainty. Sirius Welsch is a well-known detective that suffers selective amnesia due to a car accident together with his family. Known for being optimistic and certain about his findings, their accident was out of his calculation. Will he be able to work like he used to or his condition will slow him down? Will he be able to regain his memories and find out who's responsible for their car accident?