Caroline is a little girl only in her teens. Like other children of this age, Caroline is full of childish curiosity about everything around her. For various reasons, her parents decided to move the whole family to another small town. Moving is quite a troublesome and tiring job for adults, but for little Caroline, it was a pretty interesting experience. Similarly, this newly settled town seemed gloomy and weird to the adults, but all these were so interesting in Caroline's eyes. Whether it was the old man who trained a rat circus or the strange sisters who always quarreled, they all became objects of her exploration.
But the most amazing thing was not these. Caroline found an astonishing big secret in this old house! Originally, she had counted the doors in her house, and the number stopped at 13, the unluckiest number. But magically, there was a door in the living room that no one had discovered. Where did this door lead to? Caroline was definitely a doer. She fully recognized the correctness of the saying "practice is the sole criterion for testing truth." So she walked through this door...
Behind this door was a "mirror world" exactly the same as the real world. Although this world was a bit weird, it was very interesting. More importantly, there was a "mother" in this world. This "mother" was also kind to Caroline, except that she had button eyes. Of course, everyone knows that Lin Daiyu might fall from the sky, but not a good mother. This seemingly amiable mother was certainly not a good person. Not only did she kidnap Caroline's real parents, but she also tried to sew up Caroline's eyes and keep her in this world forever. But Caroline wouldn't give up so easily. Just like Alice had the help of the Lion, the Scarecrow, and the Tin Man, Caroline's "support group" quickly appeared, though this time it was a haughty black cat and three ghosts. Thus, the battle between humans and demons began again...