The class goes on a field trip to Okinawa but things go wrong when the students skip out for the night and get into a brawl and Uchi does not return. Kumiko goes out to find him and accidentally rescues a different Uchi for one of the local gangs. After Kumiko displays her temper, the gang decide to help her find student Uchi. When they find him, she is overjoyed, but nevertheless gives him a hiding for causing her so much trouble.