It is a normal hot day in Bangkok City and heroine Issada and her all-girl class are excited about next day’s dodgeball match and play ball in the classroom even though it is strictly forbidden to do so. Issada’s best friend Saisisom throws a ball which hits a vase. The pottery lands in front of the feet of the most frightening teacher of the whole school. The teacher shouts at the class and imposes the worst possible punishment on Saisisom: Nobody is allowed to talk to her for the rest of the day. Issada sees Saisisom’s pain and knows the punishment is unfair because they all played ball in the classroom. She stands up and asks the teacher to get a punishment, too – and four other girls follow her example. Instead of the expected scolding the teacher honors their honesty and tells them to clean the school yard in the afternoon – and everyone is allowed to talk to Saisisom again.