Other Title: 仮面ライダービルド-燃えろドラゴン, Kamen Raidā Birudo-Moero Doragon
Summary: Faust stole the Pandora Box as well as a few Fullbottles from Build!
Night Rogue does not back down as he aims to claim all of the
Fullbottles left in Build's possession. The only ones left behind are
the Lock and Dragon Fullbottles. The KeyDragon form can only be accessed
by Build, however, the power within the Dragon Fullbottle is so strong
that it becomes impossible to control even in a Best Match
configuration! In desperate circumstances, there doesn't seem to be much
of an alternative, until Sento thinks of one... if the Dragon
Fullbottle can be used in the Cross-Z Dragon, it will become compatible with the Build Driver!