Welcome to the sci-fi worlds of brainy teen heroines who hack not just computers, but whatever puzzles come their way. A scrappy mechanic on an oppressed planet builds a device she hopes will be her ticket to a better future. A fledgling chemist uses her skills to catch a murderer. A teen inventor creates a weapon to battle the mysterious beasts attacking her city. A superhero-in-training puts her skills to the test when attackers strike her compound...