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)

After earthquakes suddenly took place in the Kumamoto Prefecture, Natsuna Keyaki lost contact with her dearest online friend, Itsuki. With nothing but a drawn picture of the landscape, Natsuna embarks on a journey from Tokyo to Kumamoto to find her. When Natsuna gets lost in a rural area of the disaster-stricken prefecture, she encounters a policeman and an energetic middle school girl named Izumi Chiba. Izumi, along with her hospitable family members, offers Natsuna shelter and information to assist her in her quest. With these kind locals helping her on every step of the way, Natsuna moves closer to discover what happened to Itsuki.

In Edo in the mid-1800's, fireworks maker Seikichi Tamaya and his friends struggle to live under the harsh morality laws imposed by the strict city councilor, which ban all luxuries, including fireworks. One day, a strange girl stops by Sekichi's shop with an equally strange request: she wants Sekichi to build a firework that can reach the moon.

Optimums, a terrorist organization, maintains an oppressive regime over Sacco City—a place where thousands of immigrants reside. Since they came into power a year ago, the organization has enacted new laws and reclassified the immigrants from the far east as East Refugees. He Jiang is a hot-tempered girl who travels alongside her father, He Chang Feng, as he delivers goods across Sacco City in their truck. One day, the Klee—a military police force—apprehends both for being in possession of a sword. In the ensuing struggle, He Chang Feng is shot dead while his daughter is imprisoned for eight years. Finally released from prison at the age of 24, He Jiang, with the help of her new friends, finds her abandoned truck and repairs it. As she begins delivering goods around the city once more, she faces various hurdles. With the Department of Security discriminating against her and the other East Refugees, He Jiang is forced to fight back, but she will need to gain more allies if she wants to stand a chance.