In ancient times, there were stories of nightmares and dream spirits. Nightmares are transformed from people's nightmares, while dream spirits are transformed from people's beautiful dreams. However, if the dream spirit is obsessed with it too deeply, it will turn into a nightmare and eventually become a demon. Dream spirits are the purest and cleanest spirits in the world. Their love has no jealousy, no deception, no calculation, only warmth that goes deep into people's hearts...