Twenty-four-year-old country bumpkin Aiko is a new teacher who has arrived at a new town and a new primary school. When nervous she blurts out her local dialect. This seals her nickname and reputation. Nonetheless, she is determined and strives to do her best for her students. She is an inspiration soon.

Ultraman Saga opens with a powerful apocalyptic vision of Tokyo, buildings destroyed and the city seemingly devoid of life. We are soon introduced to the Earth Defense Force (EDF), Team U (played by members of the female idol group AKB48). They and a group of young children and the last survivors on planet Earth after the world was invaded by the evil Alien Bat, the rest of the human population having been abducted.

Kota hears about an impending 1.5 billion yen gold bar heist from his friend Kitagawa, a former college classmate, and decides to take part. The gold bar sits in the basement of the HQ of Sumita Bank. Helping Kota and Kitagawa are bank security employee Noda, a North Korean spy pretending to be a college student, Kitagawa's younger brother Haruki and a former elevator engineer. These 6 men are about to carry the boldest of schemes to bypass the bank's high-tech defense system.

This story follows the semi-autobiographical account of manga artist Shotaro Ishinomori, author of the original Kamen Rider, Cyborg 009, and Super Sentai.