Jin Xia, a 27-year-old assistant to a wedding dress designer, bought an old house by the sea with a loan. She thought that her happy life with a house would begin, but she soon discovered that the house was haunted! It turned out that there was a boy who behaved and had abilities like a ghost living in the old house. This boy who seemed to be a "ghost" had no memory and could not leave the old house. He seemed to have a close connection with Jin Xia. In order to find the reason for their bond, the two began a blushing and heart-pounding cohabitation life of "the husband hidden in the house".