Having no money mid-flight to Tokyo from Muroran, Nao (Yasuko Matsuyuki) decides to borrow money from her stepmom in Tokyo to stay at a hotel with Tsugami -without telling her stepmom about Tsugami. While leaving Tsugami to meet her Stepmom, Tsugami bumps into Nao's birth mom. NAO begins her search in the city looking for a place to live and work the next day. Nao finally finds a janitor job and start workings but has to leave Tsugami for extened periods.
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.
