Shin-chan stamps the seal on all the New Year greeting cards. He posts Misae's greeting cards, but in the wrong post box. As Shin-chan and Shiro feel hungry, they open a neighbour's parcel and eat it. After knowing about it, Misae scolds Shin-chan. Shin-chan and his friends celebrate Christmas party at Yoshinaga's place. Yoshinaga enjoys herself with the kids and doesn't let them go home.