Based on a short story of the same name by Victoria Schwab, Netflix's "First Kill" follows Juliette Fairmont, a teenage vampire who falls in love with Calliope "Cal" Burns, the new girl in town. However, it also turns out that Juliette is in fact a monster hunter from the Guardian Guild. Juliette needs to make her first kill to earn her place within her powerful vampire family, while Cal is supposed to kill vampires and other terrifying supernatural creatures. However, the duo can't help their feelings for each other, causing rifts between themselves and their respective families.