Zoe is an eight-year-old girl who is able to understand the barking of her dog Zank. He likes to ride a bike and help those who need it. That’s why it’s always stuck in some mess.” These words are presented at the beginning of the book Zoe, the main protagonist of the book with his dog Zank.

Mikel Valverde, as before with Rita, tells us in this section the adventures of a girl (because it will be a collection of Zank & Zoe as the books come out), and uses the mixture of reality and fantasy that the little ones love so much to immerse themselves in a lively and entertaining history.

Valverde starts from a story that starts from a problem that is increasingly occurring in more towns and cities today: The crisis of small businesses. The story begins when Zoe and Zank go to Mrs. Tea’s pastry shop and, like every Sunday, they will make “a visit that was a pleasure for both.” But Mrs. Tea is sad, and behind a sign that says: “Let’s close the pastry shop.”

In view of this fact, Zoe and her family intend to do something so that Mrs. Tea's pastry shop is known and can move on. Starting from the grandfather’s idea that “the lady tea has to advertise her pastry, but innovatively!” and seeing Zoe’s strength, dexterity and dexterity on the bicycle, they decide to participate in a race.

The author gathers, through the text, but also at the secondary level, through abundant and adequate illustrations, everything that happened during the preparation and the course of this career, in a work full of facts and anecdotes, some malicious, other humorous. But the Black Mountain Monster, who gives title to the book, also has its role, and not its small role, in this adventure that touches on social and even ecological issues. But the best thing to know who that monster is and why it behaves as it does is to dive into the story of Valverde and enjoy with Zoe and Zank, the smart dog… as they enjoy with the pasta of Mrs. Tea!