The anime revolves around a boy named Cota Coga (a wordplay on Coca-Cola) who strives to be the world's best Bottle King at the Bottle Battles in the virtual Drink World, with his Bottleman partner Colamaru and battles with various rivals.

Bottleman! A new entertainment that has revolutionized the world! In the virtual space, Drink World, people use Bottleman to do bottle battles with one another! All strong bottle fighters aim to be the Bottle King!