Long, long ago, the White Kingdom in the sky and the Black Kingdom on the ground were in a cycle while maintaining a balance. But at a certain moment, the powerful Dark King appeared. While invading the White Kingdom, the Dark King proposed an alliance to defeat Baal, a thorn in his side. The Light King Alice believed the words of the messenger Adel who hoped for balance and formed an alliance. Even after being attacked by Adel, Alice still believed in the Dark Prince who killed Adel and made a promise to bring peace to the world together. But the Dark King trampled on their promise. The Dark King wanted to destroy not only White but also Black. The Dark Prince, who realized this, sighed underground and gained the power to fly across the sky and headed for Alice. As the Dark Prince suppressed the dark army and reached out to Alice, a world came to an end...