Lin Yan'er is a real homebody with a "bad luck". Yes, you read that right. It's mold. Because she is so reclusive that it is not an exaggeration to say that she is isolated from the world. She would never go out except when her friend Sangsang called her. So, God couldn't bear it, and a sneeze sent her to the 34th year of Hongyuan - an era that did not exist in history, and asked her to help several princes...