Shadowhunters is based on the popular teen series The Holy Grail by Cassandra Clare. In the show, Katherine McNamara plays Clary. On her 18th birthday, she discovers that she is actually the child of a human and an angel, a shadowhunter. Her main character is to protect humans and defend against demons and other dark creatures at all times. After her mother is kidnapped, she enters a whole new world with other shadowhunters Jace, Alec, Isabelle, her good friend Simon, and the magician Magnus Bane. The first season of Shadowhunters premiered with 2.9 million viewers. According to Freeform, this is the second most popular show among viewers aged 18-49 (1.6 million), and the premiere also set the highest ratings for men under 50. The news of the renewal of the show was announced through a Facebook Live chat, which is in line with the tastes of the young-dominated network.