Determined to destroy CODE even at the cost of his own life, Baku tracks down the missing Nox by diving into his subconscious. There, he witnesses Nox awaken a new power through the Capsem and transform into Kamen Rider Nox. As Nox declares his intent to cast everything into darkness, he confronts Lord Three in a fierce showdown, setting the stage for a battle that could decide the fate of both worlds.