Emerging painter Mo Li always gives a glimpse of people's hearts through his ink paintings. No one knows that she is an ancient soul painter who came from time to time. What she paints is not the beautiful scenery, but the "key" to the dream.
"Paintings are made from the heart, dreams are born from evil." She cannot control the dream, and the deepest guilt and fear in the dreamer's heart will create a unique purgatory. This is not only what she relies on to punish the villains, but also a fate she cannot escape.
When the gentle antique collector Shen Qingyu becomes her confidant, and when the sharp and decisive criminal police captain Lin Lei regards her as the key to solving the problem, a mystery surrounding ancient and modern times and dreams quietly unfolds.
However, Mo Li soon discovered that the biggest nightmare was not the evil of others, but the person around her who understood her best. Under Shen Qingyu's smile, there is hidden a connection with her through thousands of years, as well as a shocking conspiracy that wants to swallow reality.
When the dream begins to erode reality, Mo Li finally realizes: Is what she draws a blade to punish sin, or a mirror to see redemption? She must make a choice and face the evil situation that originated from her and spanned thousands of years.
