"The Midwinter Witch" is the third and final installment in the Witch Boy trilogy by Molly Knox Ostertag.Story SummaryThe story follows Aster, a boy born into a family where males are raised as shapeshifters and females as witches. Having chosen to break tradition and pursue magic, Aster prepares for the annual Midwinter Festival, a large family reunion featuring the Jolrun tournament, a magical competition. Determined to show his family he is proud of who he is, Aster decides to compete as a witch, despite lingering hostility from traditionalist relatives.Parallel to Aster's journey, the book focuses on his friend Ariel, an orphaned witch being raised by Aster's family. Ariel struggles with her identity and the pull of "dark magic" after a mysterious, long-lost aunt begins visiting her in dreams, claiming to know the truth about her past.As the festival unfolds, Aster and Ariel must eventually work together to defend their family and friends from a powerful and sinister force that threatens the reunion.