Humans acquired a perfect source of energy called "Patia", which brought self-sufficiency in food and fuel to all the people in the world. Trade and transportation began to diminish and finally the advance of the civilization terminated. Now the genetically modified plants cover almost all of the lands on earth and obstruct travelers. Cient, the leader of a fortress city, sets out on a trip to excavate the lost technology "Patia" with his daughter Ruri. When Ruri gets separated from her father, a giant humanoid weapon of the old age attacks her. Ruri is saved by a girl named Tekuni who is traveling around the world training as a "Wazabito" fighter.

The story is set in a world where every event has been turned into programs, and mysterious monsters known as "Promin" maintain the world. However, many Promin who have turned into bugs known as "Bugmin" are responsible for many of the world's real-life bugs. Left alone, they may eventually turn into a big problem. The boy Yuuto encounters the space dog Wanda, and the pair use a camera-like device and key items to capture Bugmin. Promin themselves are able to do things like "accelerate objects," "spew fire," or "create objects," through an ability known as "Kamiwaza" (miracle), and are able to fend off Bugmin with it. At first, the Bugmin only cause small, bothersome things, but it will soon elevate into a global scale threat. Can one boy and one dog save the world? (Source: ANN)