How were the Gaia Memories created? How did Double's battle begin? To answer Tokime's questions, Shotaro quietly begins to talk about how he met and parted with his master, Sokichi Narumi, a man whom he looked up to as his "boss".
When the Dopants, monsters who utilize Gaia Memories began to operate in the windy city of Futo, a young Shotaro became Sokichi's assistant and followed in his footsteps despite being called 'half-boiled."
Shotaro becomes increasing impatient with Sokichi, who secretly operates on the side as Kamen Rider Skull. Meanwhile the Narumi Detective Office receives a phone call... It is a request from hell that will led Sokichi and his team to a fateful night!!
What will Shotaro see as he follows Sokichi whereabouts in order to deliver the "trump card" brought to him by the mysterious client?
Shotaro and Philip, the duo detectives who met on the first night they became Kamen Rider Double.
The full story will finally be revealed...
