少年仲人无意中闯入了绫小路博士的实验室，阴差阳错地启动了博士研究的钢铁天使胡桃，而胡桃也只把仲人视为主人，对他唯命是从，军队为了收回胡桃，先后派了另两位钢铁天使莎奇和佳玲加，但都失败了。原来整件事背后还有一个组织在操控着，而且博士也被他们劫走了，为了找出答案，仲人和胡桃一行人起身前往博士的秘密实验室。
钢铁天使 (季节 0)
Saki Becomes a Star (集 1)
播出日期: 2000-07-19
运行时间: 15 min
概述: Saki gets a big break and becomes one of Japan's biggest stars! She gets an offer to go to Hollywood, but will Saki accept it and leave her friends?
Karinka, a New Love (集 2)
播出日期: 2000-08-02
运行时间: 15 min
概述: Karinka receives a love letter from an anonymous person. When Karinka goes to see who her secret admirer is, she spends the day with Kamihito instead, while being followed by Kurumi, Nakahito, and Saki.
Kurumi, Became an Adult (集 3)
播出日期: 2000-09-06
运行时间: 15 min
概述: Kurumi tries to appeal to Nakahito by acting more like a mature woman.
The Eternal Steel Angel (集 4)
播出日期: 2000-10-04
运行时间: 15 min
概述: The other Steel Angels think that their true powers will unlock when they kiss Nakahito. Thus, a competition is held to determine which Steel Angel will kiss Nakahito. And what of the masked Steel Angel Yaoi?
Angel Force (集 5)
播出日期: 2001-04-18
运行时间: 15 min
Angel Smile (集 6)
播出日期: 2001-05-16
运行时间: 15 min
Angel Heart (集 7)
播出日期: 2001-06-20
运行时间: 15 min
季
集 24
集 12
集 7