A millennium ago, the Five Monarchs guarded the land of the Xia Dynasty with magical artifacts. Later, the leader of the Dragon Clan, Zu Long, assisted humanity by establishing the Yun Chui Empire. The Empire faces the Tranquil Ocean where the Xi and Black Water Clans have defended it throughout a peaceful millennium. Now, the waves are surging from below and chaos will rise once again.

The anime centers around a boy named Kouta Kouka (Kouka Kouta in Japanese name order, an apparent wordplay on Coca-Cola). Kouta strives to be the world's best Bottle King at the Bottle Battles in the virtual Drink World. He comes across his Bottleman partner Colamaru and then wages battles with various rivals. (Source: ANN)

On the vast continent, heroes break through obstacles and chase their dreams. What are heroes like? They go beyond themselves and try to be perfect; They carry burdens forward and understand the true meaning of love; They advocate power and never give up. We write biographies of heroes and start a new chapter of love and courage.

Black Nest Technology, a giant enterprise headed by Xiao Sin, has almost conquered the world. It is rumored that their proud humanoid weapon "Guardian" has the power to destroy the world. However, not everyone accepts Xiao Sin's rule. The protagonist, Bai Jiu, successfully entered the Black Nest Technology with the help of his fellow rebels, trying to obtain a "detector" and recover everyone's life experience and family. And what purpose will the protector INK, who was sent to destroy the invaders, come here?