Ryoma Sengoku continues his research of the Sengoku Drivers along with Takatora Kureshima. Takatora thinks that the lives of humanity was the number one priority, however Ryoma disliked his way of thinking increasing the production with cost as the main priority than efficiency.Meanwhile Sid and Yoko investigate a suicide attack that was taking place in Yggdrasill. The mastermind of this incident was Black Linden. They come to know that one of Ryoma’s former colleague was part of Black Linden and had used the Zakuro Lockseed to brainwash people. Ryoma knows this is impossible, because his former colleague died in the Out-of-Control Lockseed incident a long time ago. It’s been one year since Kaito disappeared, and peace had returned to Zawame City once more. Zack departed for New York, and left leadership of Team Baron to Peko. However upon hearing that Shura, a former member of Team Baron that Kaito once exiled, had formed his own team, Neo Baron, Zack returns to Zawame City to set things right.
某天，世界樹內部發生使用新種鎖頭·芭樂Zakuro Lcok Seed的自殺式爆炸