When Amelia and James' parents buy an old hotel on the outskirts of a small beach town, the children don't immediately realize where they've ended up. It turns out that "Portal" is not an ordinary hotel, it has a secret. Guests don't just come here from other cities - they come from other worlds! Amelia and her new friend Charlie suddenly find themselves drawn into a universe of incredible adventures, encountering creatures ranging from space pirates to alien monsters, malfunctioning robots and intergalactic warriors the size of pigeons - and each new guest requires a special approach!