Season 1 of Kamen Rider Drive: Secret Missions - Type SCU premiered on April 8, 2015.

How did this member become recruited to the Special Investigation Unit? The mystery lies within the murder case files. It all began with a thought… “why is this person a member?”

“If you want to know that, then you should look into the murder cases from one year ago.” Mr. Belt advises taking us back to the birth of the Special Investigation Unit.