Max and his best friend Peregrine realise that a dangerous pack of werewolves from Max's home country of Krit are closing in them, But Max hasn't told anyone about Sirius the tiny werewolf cub he found, smuggled home, and decided to keep... This is Max. He can turn into a huge monster just by burping. He wants to be a good monster by protecting and doing good stuff. When Max and his best friend Peregrine realise that a dangerous pack of wolves from Max's home country of Krit are closing in, Peregrine sets about building a fortified treehouse to keep them safe. But Max is distracted and doesn't want to help. He hasn't told anyone about the tiny orphaned wolf cub he found, smuggled home with him, and decided to keep.