The little tiger cub refused to be very curious, for which he paid in The Cave of Shadows. He decided to take a walk through the forest on his own and accidentally entered the territory that belongs to the trolls, and they do not like guests, no matter who they are. Seeing the tiger cub, they caught the baby and locked him up until they decided what to do with him. In any case, nothing good awaits the prisoner, so you must save him. Trolls will not dare to harm you. On the contrary, they will help you if you give them what they ask in return for their services. You need a key, look for it or whoever may have it in The Cave of Shadows.
