During a failed heist, Casey is certain that she saw some kind of strange animal. She tries to convince herself that she was seeing things, but that's when that very creature shows up in her house. He is a jackelope named Jack Lopez, and he needs Casey's help. Jack is a Guardian, one of many mythical creatures whose job is to protect the world's greatest treasures. Why is he recruiting Casey? Her dad was Jack's partner, and he taught Casey everything...