The Wild Pack: Book 1 by Andre Marx & Boris Pfeiffer [Paperback]

In this adventurous tale, Hamlet, a spirited young wolf, escapes from the zoo in search of the Wild Pack, a group of animals living freely in the abandoned rail tunnels and caves beneath the city. However, instead of the brave companions he anticipated, Hamlet discovers a scruffy, mismatched group. Faced with the challenge of rallying these unlikely allies, Hamlet must find a way to motivate them to help rescue his friend, a gorilla trapped in the zoo.