After being retrenched from his job at a Tokyo securities firm, Tsunezue Riichi decides to return to his hometown to work. He soon lands a job at the company GALAXYZ, a job that his parents highly recommended. GALAXYZ is a newly set up company, with young entrepreneur Kui Yoshiaki at its helm. Unbeknownst to Riichi, the company actually handles AV (adult videos, i.e., pornography) projects. Even the office ladies at the company's premises are actually all aspiring AV actresses. Throughout the entire company, everything is AV-centric, with even filming taking place within the office! Amidst all these, Riichi finds himself fascinated by a sweet, charming girl, Momoko, another OL/AV wannabe…

One day, five kindergarten children suddenly disappear from a kindergarten in Tokyo, sending their teachers and parents into a panic. The five of them are connecting on trains and headed to an unfamiliar place for some purpose.

Yasuko Matsuyuki plays the part of Nao Suzuhara, an elementary school teacher. When she realizes that one of the female students is receiving abuse from her mother, Nao's maternal instincts kick in, and she impulsively decides to bring the girl into her own care. Serving as a substitute mother, Nao takes the child on a trip from Hokkaido to Tokyo, and the two experience various events together along the way.