The Six Years Old Dragon MasterDragon TrainerEpisode 40

Raised by dragons and possessing the extraordinary ability to tame them, Leo descends from the mountains in search of his family. After saving Greta, she tries—but fails—to persuade her mother, Freya, to take him in as a younger brother. When the Black Mountain tribe arrives to seize the Storm Dragon King and forcibly claim Freya as a bride, Leo summons the dragon to defeat them. The truth is finally revealed: Leo is Freya’s long-lost son.