The last secret of dragons. Rempt F.

Matti and Dinya finally turned twelve years old, they passed the dedication ceremony and became real members of the Order of the Dragon riders. Despite the fact that there are already many dragon missions on their account, they always remind the boys that they still need to grow up for serious things. But, observing the preparation of the operation “Sea depths”, unexpectedly they turn out to be the only ones who can try to unravel the last secret of the dragons.