Agnes and the Forbidden Mountain - Hurdová Veronika

"Agnes lives in a virgin forest tribe of Magreys. Each tribal member is born with an exceptional gift. As soon as the Magrey discovers and masters the gift, there comes the time to perform it during a Full Moon Celebration and to promise not to misuse it and to share it with the whole tribe. The only catch is, the Magreys must manage to do so before their twelfth birthday, otherwise they turn into Shadows. Agnes has just celebrated her eleventh birthday. And apart from others, she still does not know what her gift is. Therefore, she sets out on a dangerous journey to the Forbidden Mountain. To the very same mountain, from which her daddy didn't return five years ago."