Since high school, Sang Zhi has had a crush on Duan Jiaxu. When fate brings them together again, they find a chance to embark on a sweet relationship.

Jin Xia, a 27-year-old assistant to a wedding dress designer, buys an old seaside house, hoping for a happy life as a homeowner. However, she soon discovers the house has an unexpected resident—a mysterious young man who seems to be linked to her in strange ways. Unable to leave the house and with no memory of his past, their connection unfolds as they begin an unusual cohabitation.