隸屬邪惡組織「阿卡斯提亞」怪人開發部的黑井津，因為上司的無理取鬧，被迫在會議上發表尚未完成的新怪人企劃。面對不好對付的幹部們，黑井津有辦法成功贏回預算嗎？戰鬥對手是他們從沒打贏過的英雄「劍神布雷達」。黑井津能否熬過日以繼夜的工作，成功做出打倒布雷達的怪人呢？

臨時被告知要去九州出差的黑井津，與幹部梅吉斯托斯一起搭乘新幹線趕赴當地。與抱著旅行的心情出差的黑井津相反，上司梅吉斯托斯直到目的地前都不忘工作。黑井津懷著艱難的想法，著手進行新怪人的企劃，沒想到卻被組織的各部門提出意見反駁。即使如此，依舊不放棄的黑井津和助手沃爾夫同心協力，終於做出新怪人加農·雷鳥。

黑井津這次為了打倒布雷達，開發了再生怪人九頭蛇，但這個怪人也因為預算的限制，沒能裝上原先設計的功能。拜再生能力所賜，向布雷達挑戰好幾次的九頭蛇，讓布雷達覺得很煩躁，因為這樣他會趕不上便當店的打工。好不容易趕上打工的布雷達，遇見前來買便當的黑井津。

卡繆拉是以奉行紀律聞名的幹部。黑井津想取卡繆拉身上的萬能細胞來當研究材料。某天，黑井津去參加偶像的演唱會時，看見一個熟悉的身影。另一邊，阿卡斯提亞的首領和沃爾夫來到被英雄擊敗的怪人們工作的遊樂園視察，卻發現園區裡有敵對組織「黑蘿亞」的怪人混入。

新器材通過申請讓黑井津他們非常高興，但高興也只有一瞬間，最後還得請全體幹部在會簽書上蓋裁決章。黑井津和沃爾夫分頭前往幹部們所在的基地，這才親身體會要得到所有人的蓋章是一件非常艱辛的事。另外，似乎是為了上回的事來找他們算賬的黑蘿亞博士峰圓，帶著可怕的宇宙怪人艾爾巴姬，前來阿卡斯提亞的本部踢館。

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