Nelly and her dog London are about to spend autumn break with her uncle Hannibal. Soon she noticed that he doesn't live a quiet life. Her uncle is a Monster agent. Nelly gets dragged in to an adventure filled with ghosts, vampires and werewolves.

Graduation just happened, and now it's time for adventures in Berlin with the childhood friends Sophie and Alice. But Sophie hesitates, and after an altercation, the impulsive Alice goes by herself - and mysteriously disappears. Sophie goes after her in desperation to find out what happened to Alice, which is the beginning of a painful journey from teenager to a young adult. It also is a journey into her friend's darker side, which she has hid from the rest for so long.