A futuristic firefighting mecha service is created to protect the world.
Bell Cranel goes to a festival in the city where he enters a contest to pick up a legendary spear. Pretty soon, he embarks on a quest with the Goddess of the Hunt, to eliminate an ancient threat that lurks outside the city.
Underneath the sands of Egypt, Anubis, an ancient evil spirit, has awakened. It's up to Yugi, who defeated Anubis centuries ago, to use his skill and determination to rid the world of evil once again.
A rivalry between two heirs to an estate escalates into a supernatural quest when one of them becomes a vampire and the other sets out to stop him.
Toujou Basara is a high school student whose father has suddenly just remarried. His father then departs overseas leaving Basara with two new beautiful step-sisters. Little does he know, his new sisters, Mio and Maria are actually the new Demon Lord and a succubus!? Almost trapped into a life of servitude, Basara forms a reverse contract by accident and ends up becoming Mio's master. Hijinks ensue as Basara finds himself in one ecchi situation after another. However, Mio's life is in danger as she is pursued by demons and heroes.
Throughout three different stories, Kari Kamiya and her friends take on explosive adventures involving digital creatures.