Two astronaut HumaGear "brothers", Raiden and Subaru, storm into Aruto's office to air their grievances over being able to perform maintenance on the Zea satellite effectively. To make him understand just how much harder he makes their jobs, they take their boss to the company's Space Development Center to show him. Meanwhile, Yua concludes MetsubouJinrai.net has a mole within Hiden Intelligence based on their ability to locate HumaGears reaching singularity. Concurrently, Horobi gives Jin the order to retrieve all the Progrise Keys so they can reactivate the Ark satellite, resulting in Raiden being exposed and becoming Kamen Rider Ikazuchi and Isamu gaining the power of the Assault Wolf Progrise Key.

Following Jin's deadly attack on Izu in retaliation for Horobi's perceived death, Aruto confronts the rogue HumaGear in a final battle using the power of Shining Assault Hopper. All the while, Gai watches them from afar as he continues to prepare for what he believes will be the true battle now that he has Horobi in his possession.