The Myth of the Llama — Jeri Massi

Andy Spenser has a goal in life: save the world from destruction. If only things would go right for him! He moves to a new home and a new school where bullies beat him up. And then he loses his best friend. On top of that, his father gives him a young, unfriendly, badly trained llama who doesn't even like Andy. But Sinbad has one talent that nobody guessed. He drags Andy into a strange world where Andy's dreams, or possibly his nightmares, might just come true.