Yoshi is walking along a mountain path with an insect net and basket when he notices an unfamiliar girl inside a phone booth. The girl also notices Yoshi looking at her and calls out to him. The girl's name is Sachi, and she seems to be having trouble because the phone isn't working. Yoshi can't leave her alone, so he enters the phone booth. At that moment, the insect net gets caught in the door, and he can't get out. To escape the heat, Yoshi takes off his clothes. Sachi hesitates, but she can't stand the heat and takes off her clothes as well. Yoshi sees Sachi's figure and becomes aware of her as a member of the opposite sex. Insects fly out of the insect cage Yoshi is holding. Sachi panics and hugs Yoshi. Yoshi feels the softness of Sachi's female body.