"The Ancient Magus' Bride: Those Awaiting a Star" is a three-part prequel OVA series that delves into the backstory of Chise Hatori, the protagonist of "The Ancient Magus' Bride." The narrative unfolds before Chise's encounter with Elias Ainsworth, focusing on her life in England after being sold into slavery. The story begins with Chise living in a remote village, where she is treated as an outcast due to her ability to see spirits and supernatural entities. Her life takes a turn when she is purchased by a mysterious man named Renfred, who takes her to a secluded mansion inhabited by a group of mages.

At the mansion, Chise meets Lindel, a mage who becomes her caretaker and mentor. Lindel introduces her to the world of magic and teaches her how to harness her innate abilities. Despite her initial reluctance and trauma from her past, Chise begins to find a sense of belonging among the mages. The story explores her struggles with self-worth and her gradual acceptance of her unique powers. Alongside Lindel, Chise encounters various magical creatures and learns about the responsibilities and dangers that come with being a mage.

The OVA also introduces key characters such as Angelica Varley, a skilled craftswoman who creates magical tools, and Elias Ainsworth, who makes a brief appearance, hinting at his future role in Chise's life. The narrative is interwoven with themes of loneliness, healing, and the search for identity, as Chise navigates her new environment and begins to understand her place in the world. The series provides a deeper insight into Chise's character, her resilience, and the events that shape her before she becomes the bride of the ancient magus. The OVA serves as a poignant exploration of her early struggles and the foundation of her journey toward self-discovery and acceptance.