Gunpowder Milkshake brings an all-star cast to the screen in a gritty, dark film about female assassins. After Scarlet (Lena Headey) leaves her daughter Sam (Karen Gillan) in the hands of the librarians (Angela Bassett, Michelle Yeoh, Carla Cugino). Years have passed and Sam faces the same fate her mother did years before. Can they all work together for the greater good? Does the film fly high or fall flat?