"Shadowhunters: The Mortal Instruments" is a fantasy television series based on the book series by Cassandra Clare. It follows the story of Clary Fray, a young woman who discovers she is part of a hidden world of demon hunters known as Shadowhunters. As she navigates this new reality, she learns about her family's secrets and her own unique abilities. The show features a mix of supernatural elements, including demons, warlocks, and vampires. Clary teams up with other Shadowhunters, such as Jace Wayland and Isabelle Lightwood, to battle dark forces and protect humanity. The series explores themes of friendship, love, and identity.