Two teenage boys trapped in a video game full of dinosaurs, quirky twins stuck in a bank vault, an inquisitive teenage girl held captive in a villain's cellar - all while shapeshifting aliens team up with an eccentric scientist to recover a mysterious crystal which leads to a riotous showdown featuring a chaotic car chase, more dinosaurs, a bicycle and a sheep in an alien spaceship.A fast paced, often humorous tale for young readers aged 8 and above