小新今年5岁了，不要以为他是那种懵懂无知的小孩，他其实人小鬼大，喜欢漂亮的姐姐，收养了一条棉花糖一样的流浪狗——小白，还经常讲些无厘头的黄色笑话。小新的妈妈美伢是一个全职主妇，粗心而又有点神经质的她经常被小新捉弄得七窍生烟，爸爸野原亦经常被这两母子搞得晕头转向。 《蜡笔小新》的作者以一个5岁小童的眼光，40岁的成年人的心态去观察这个大千世界，看到了许多光怪陆离的景象，小新一家的幽默故事亦由此产生。
平凡的中学生鹿目圆（悠木碧 配音）有一个美满的家庭，在生活中她是个性格温顺又有爱心的好孩子。转学生晓美焰（斋藤千和 配音）的出现打破了小圆平静的生活，这个性格酷酷又体弱多病的黑长直少女似乎对小圆有着什么难言之隐。命运中的相遇出现了，小圆在路边救下了一只浑身是伤的奇怪动物 ，没想到这只动物居然会说人类的语言。它告诉小圆它的名字叫丘比（加藤英美里 配音），并且提出了一个特殊的要求，它希望小圆能够和它签订契约成为魔法少女。
Kai Nagisa, a normal high school girl who wishes to one day become a professional wrestler, is suddenly approached by a robot known as an Iczel. Iczel urges her to help save the Earth from invading aliens called Geas. The Geas, led by Chaos and Cross, are bent on stripping Earth's resources and then destroying it. To fight the invaders, Nagisa must merge with Iczel and become a battle-suited warrior named "Iczelion". She is reluctant to take up this sudden unbelievable task and fight with the other Iczelions of Earth because Nagisa just wants to live a normal life without having such big responsibilities. Nagisa must overcome her fears and fight, together with other Iczelions, to prevent the invading alien forces from destroying their homeplanet, Earth.
随动画BD第四卷发售OVA2
