Flaggermusvinger is a Danish film that tells the story of a young girl named Katrine who is struggling to cope with the recent death of her mother. She finds solace in her friendship with a boy named Jesper, who introduces her to the world of bats.
As Katrine learns more about bats and their behavior, she begins to see parallels between their lives and her own. She starts to believe that her mother's spirit has taken the form of a bat, guiding her through her grief and helping her come to terms with her loss.
Through her newfound connection with bats, Katrine is able to find peace and acceptance, and ultimately learns to embrace life without her mother.