Henry was accepted into the squad of dinosaur knights! The boy is happy, because it’s very cool to be one of them: they are truly brave and are always ready for any challenge. So, one day, while patrolling the borders, Henry and other dinosaur knights met strangers who appeared straight from the forest. Who are they? And why did you come to Breklan? It turns out that these are children from a mountain village. Their houses were destroyed by unknown people, and their relatives disappeared without a trace. Henry is not afraid of difficulties and really wants to help! But will other dino knights agree to leave the province and go on a long journey? And will they be able to find the mountain inhabitants?