Build: Crossing of Ange

10 years about when after retrieving a box known as the Pandora Box but turned into a nightmare as Skywall appeared splitting the capital into three nations, a young with no memories named Yuuma Obucis unlocks the mysteries of the Pandora Box and fight mysterious monsters known as Smash as Kamen Rider Build. Then he met a Norma of the Former Princess with another mystery unlock.