In this episode, Forte, Milfeulle, and Normad are to find lost technology on a planet. Milfeulle finds an egg, and tries to cook it, however, the egg wouldn't crack. The strange egg hatched, and a mouse comes out. Milfeulle and Normad than learn that Forte is afraid of mice. Later in the episode, Forte reveals that she is allergic to mice. The mouse follows Forte into a cave, and blasts a hole into her bazooka. It then escapes when Milfeulle and Normad come, turns giant, and starts attacking everyone. Milfeulle doesn't want the mouse to get hurt, so how will Forte make sure the giant mouse doesn't destroy anything else?
ロストテクノロジーの調査で不気味な星にやってきたフォルテたち。そこでミルフィーユの拾った卵からネズミのような動物が生まれた。そのかわいい姿にミルフィーユは喜びチビ太と名付ける。が、フォルテは大パニックに。実は、フォルテはネズミが苦手だったのだ！
