Sure ten key plots that occur in "The Mirror Maiden" with 500-word descriptions for each:

1. Aurora's Encounter with the Mirror Maiden

The story kicks off with Aurora's encounter with the mysterious Mirror Maiden, a strange woman who beckons her to enter the mirror world. The Maiden provides Aurora with guidance and support throughout her journey, and serves as a beacon of hope and inspiration when times are tough.

2. Entering the Mirror World

As Aurora enters the mirror world, she is thrust into a surreal and wondrous landscape filled with strange creatures and bizarre landscapes. It is a world unlike anything she has ever experienced, and she must learn to navigate its intricacies if she hopes to survive. She's accompanied by the mentalist, a fellow traveler who helps her uncover the secrets of the mirror world.

3. Discovery of the Tower of Song

The travelers eventually discover the Tower of Song, a place that holds a great deal of power within the mirror world. As they explore the tower, they realize that every record on the shelves holds a different reality, reflecting various aspects of human experience. They are introduced to Leonard Cohen who explains to them how to traverse the varying realities within the mirror world.

4. Confrontation with the Shadow Premonitions

As they explore the tower further, the travelers are confronted with shadowy premonitions that threaten to consume them. The premonitions are a physical manifestation of all their fears and doubts, and they must work together to overcome them. During this confrontation, the mentalist even summons his unknown grandfather's power to help them overcome this danger.

5. Aurora's Inner Turmoil and Self-Discovery

As Aurora continues her journey through the mirror world, she is forced to confront her own inner demons and question her place in the world. She grapples with doubt, fear, and insecurities, but ultimately emerges from her struggles as a stronger and more determined person. The mentalist and Maiden also help her through some major character development.

6. The Battle in the Mirror Castle

Aurora's journey culminates in a battle against a dark entity that threatens to consume the entire mirror world. It's an epic battle full of dreamlike and surreal imagery that tests Aurora's strength and willpower. With the help of the Maiden and mentalist, Aurora emerges victorious by unleashing her innermost power.

7. Transformation into the Mirror Maiden

As a result of her journey, Aurora is transformed into the Mirror Maiden, a powerful figure who represents hope and resilience. She embodies all the best aspects of human nature, and her transformation is a symbol of the power of the human spirit.

8. Retirement in a New Reality

As the story draws to a close, Aurora and the mentalist leave the mirror world, but not before retiring into a different reality, leaving their travels in the mirror world behind. Even though they return to their own world, everything they've experienced has changed them forever.

9. The Book of Reflections Returned

Aurora's journey ends with her returning the Book of Reflections to the Maiden, the tome that held all of the records and realities of the mirror world. It is a symbolic gesture that represents Aurora's understanding of the vastness, wonder, and mysteries of the mirror world.

10. A Sense of Continuing Mystery and Adventure

As the story comes to a close, Aurora realizes that the journey she has undertaken is only the beginning. She senses there are other realities to be explored, other realms to conquer. The mirror world remains a vast, mysterious place, full of untold wonders, and Aurora knows that her far from over.