She Kills Monsters finds a perfect balance between comedy and themes of death and loss, while appealing to the geek in us all. After the loss of her little sister Tilly in a car accident, Agnes attempts to get to know her better through the Dungeons and Dragons notebook she left behind. Immersed in a wild adventure of a fantasy world full of monsters, homicidal fairies and elves, and 90s pop culture, Agnes learns more about her sister and the misunderstood gaming world she was a part of before she was abruptly taken away.