Zatch manages to catch the thief whose name is Kory. Kiyo seeing a wound on Kory's arm takes him along to Kiyo's father's university where a doctor can look at it. They enter Kiyo's father's office only to find it in shambles. Kiyo notices a flower on the ground and Kory reveals its a flower of the dark lord's. He reveals that a dark lord is residing in a castle and kidnaps people from the village when they do not meet his demands. Folgore soon arrives and accompanies Kiyo to the castle. Kiyo and Zatch manage to overcome the traps in the castle and reach the final room. Steng, the man living inside the caste, reveals his giant armoured Mamodo Baltro. Seemingly invincible, Kiyo realizes that the Mamodo's ability is to manipulate armor by using flowers and reveals the Mamodo is actually inside the giant armor. Steng reveals that he has Folgore and Kanchome hostage and if Kiyo attacks, he will kill them.
Un ragazzino di nome Kory ruba la valigia di Kiyo e Zatch, ma dopo averla ripresa fanno amicizia. In seguito vanno a cercare il padre di Kiyo, ma trovano la sua stanza a soqquadro con delle impronte e un fiore. Si scopre che questo fiore proviene da un castello maledetto dove sono imprigionati anche i genitori di Kory.
Zatch logra atrapar al ladrón cuyo nombre es Kory. Kiyo viendo una herida en el brazo de Kory lo lleva junto a la universidad del padre de Kiyo, donde un médico puede mirarlo. Entran en la oficina del padre de Kiyo sólo para descubrir que en la confusión.
清麿が荷物を盗まれてしまった！ 盗んだ少年の名はセッコロ、何故かガッシュと仲良くなってしまう。怪我をしていた彼を放っておけず、清麿は父のいる大学まで連れて行くことに。しかし、いざ大学に到着してみるとそこに父の姿はなく、研究室は荒らされていた。残されていた綺麗な花を見た途端、セッコロの表情が一変する。
