Shin-chan stays at Yoshinaga's house checks her room to find something different but Yoshinaga stops him. A sales girl, Urima follows Shin-chan to sell a set of books and CDs to Misae. She loses a track of Shin-chan and gives up. Misae, Hiroshi, and Shin-chan decide to buy an A/C. But Misae gets to know that the price of the A/C will reduce after a year. So, she drops the idea of buying it.