Sore Ike! Anpanman: Tetsu no Hoshi no Iron Christmas  

それいけ！アンパンマン てつの星のアイアンクリスマス

Christmas Eve has finally arrived after much anticipation! There's an exciting event happening at Iron Planet - an Iron Christmas party. Kokin-chan is thrilled because it's her first time there. She quickly befriends Kotetsu-chan and they spend time together at the amusement park. However, their joy turns into concern when Baikinmans robot transforms the Iron Planet's precious Christmas tree into a robot. Suddenly, everyone turns into trees and they find themselves in danger as they struggle to protect their beloved Christmas before Santa arrives.