The second film in Shin-Ei's series of annual WWII themed anime television movies for children "Sensou Douwa" (war story).

In June 2044, the Robotech Expeditionary Force (REF) fleet gathers at Moon Base ALUCE for its final attempt to drive the alien Invid from the Earth. This time, the REF has important technological advantages thanks to the help of the Sentinel races; the Karbarrans provided the industrial resources to construct this armada, while a secretive and highly advanced cybernetic race known as the Haydonites have provided advanced technology including Shadow devices, which make REF ships invisible to Invid sensors, and Syncro-Cannons, which are significantly more powerful than the REF's earlier weapons. The REF fleet is led by newly completed SDF-4 Izumo, a Super Dimensional Fortress over 1.3 km (0.8 miles) long under the command of General Gunther Reinhardt.

Anpanman's friends go see a bubble show performed by Shabondama-hime and her Shabondama Girls, who make exquisite bubbles by playing their flutes. One of the girls, Purun, can't make big bubbles no matter how much she rehearses. She feels inadequate as she goes to retrieve her lost flute, which Creampanda finds and goes to return. Meanwhile Baikinman takes over Shabondama-hime's castle and steals the flutes, using their power to create evil bubbles, and Purun must realize her own importance and save the day with Anpanman's help.

Anpanman’s strength from the flowers provided by the fairy Rin-Rin is in jeopardy when bad Baikinman tricks her into giving them to him instead!