"In my tenth year as a security guard, I dug out a worn copy of "Dream Notes" under an old locust tree. As soon as my fingertips touched the three words "Wangyouhai", the book suddenly became frighteningly hot - The next second, I became Lin Wei, the beautiful doctor in the community clinic, and she was holding my security stick, chasing the luminous monsters in the inner world in her dreams. Later I learned that this dilapidated notebook that had been written down for fifteen years was a golden finger that could connect the dreams of all worlds: sharing dreams with Lin Wei, I could secretly learn about the black technology of future medical treatment; I could help the history girl Su Xiao explain it. Reading the dream symbols of embroiderers in the Tang Dynasty directly opened a popular cultural and creative store; even the little girl Tongtong who can see the "Ye Shangxian" downstairs can help me unlock the hidden function of "Purifying Nightmares". Now I am a security guard during the day, and at night I lead three heroines to grab fire marrow, solve ancient mysteries, and make a lot of money in dreams. Who still remembers that I just wanted to understand that at the beginning? A dream from 15 years ago?