Konatsu, a lively female student, is enjoying her long-awaited school trip with her classmates to the fullest, but at the inn where they are staying, she breaks an expensive-looking vase. As punishment, Tsubasa, a very scary female teacher, orders her to sleep alone in a separate room. As the night draws to a close, hands creep up from under the covers and begin to rub her breasts. When Konatsu wakes up, she sees Tsubasa, who was angry just a moment ago, playing with her nipples. She is so scared and excited that she can't even make a sound, and her breasts and pussy are licked until she climaxes. The next day, Konatsu, who has a complex about her large breasts, goes to the hot springs alone, separate from her friends, but Tsubasa, a teacher with large breasts, appears there...