Everything is possible in this world, including fate and reincarnation. Silent Sunset touches on the concept of reincarnation - the abstract concept of the continuation of the humans soul after death.
Brie Wenn is a poor writer who believes part if her memories is carried over from her previous life, including her "unfinished love," as her past life was cut short. Fate introduces Brie to a man who she is convinced is her lover from previous life. She is a true believer in "loving till the next lifetime" or "love at first sight."
The author reveals her character Brie's past life through her lucid continuous reoccurring dreams. The author fabricates Brie's dreams, appearing vivid to her as they whisper secrets from her past life causes the mental imbalance in her present life. The story brings out her sadness, sufferings, and obsession toward the man she has only met once by chance.