Yukito is waken up every morning by his cute osananajimi Yumeko. Normally one would feel blessed to be in such a situation, but she’s actually a mad scientist who wants to take over the world! She would even create a robot just for this purpose, scaring the heads of state around the world to surrender without a fight.

All he wished for is to live a peaceful life until graduation. Then he saw her at a press conference on TV declaring that she will be taking over the world before the end of the year. In the commotion that follows, another girl named Ako transfers into the school to stop her. Will Yumeko be stopped by New Year’s Eve or will his dream of a peaceful life vanish forever?