Too Much Training

Max Fleming is a werewolf who is staying at the Werewolf House with his older sister and his Mom. They've been staying there for years now with the Addams family and some other werewolf children, and teens.
They had relocated Max's mom years ago when he was younger and brought her home for help in the future. They need her help now. But just her help wont be enough. They need everyone's help in the Wolf House.
People are specifically after Max and his best friend Olivia, because they have something in common that's rare and special.
What do they have in common?
What can they do with it?