A Mushroom-Type Heterodyne appears in the city but doesn't move for a week, and the 21st Century Defence Security doesn't want to get involved and risk any financial losses by using Dai-Guard. While Shirota and Akagi discuss their different approaches over dinner, the Heterodyne's spores sprout up through the streets. While the army tries to destroy the Heterodyne's sprouts, Akagi goes into a supermarket basement to rescue a dog but is injured by falling rubble...