S1, E5: O his Birthday Leo sees a beautiful dream in which he flies over the "silver lake". Tig, Jara and Mila who came to congratulate him wake him up on the most interesting moment. Leo becomes cranky and he quarrels with his friends. A gang of nasty martens watched the feud and they decided to use it in their interest. Martens escort Leo to the Black Rock - the most dangerous place in the whole forest,