The Seven Deadly Sins: Prisoners of the Sky

This is a world where fairies, goddesses and demons exist. The kingdom of Lyones, a large country on the verge of destruction due to the secret activities of the Demon Clan, was saved by the legendary knights "Seven Deadly Sins" who were great sinners, and a princess. After that, the Liones Kingdom gained stability, and some time passed since then——. In order to celebrate the king's birthday, the "Seven Deadly Sins" came to the border land in search of the legendary ingredient Sky Fish. The leader of the group, Meliodas, and the piglet Hawk who can speak human language flew to the "Sky Palace", a sky world that exists above the clouds, while searching for the sky fish. The winged "Sky Winged People" live in the Sky Palace. Meliodas was mistaken for a SkyWing boy who broke the rules and was thrown into a cell. The Sky Palace prepared a ritual to prevent the evil demon beast that had been sealed for three thousand years from being released. However, the "Six Black Knights", a powerful demon group led by "Belion" who attempts to break the seal and take the lives of the Sky Winged people, appears. In order to protect everyone from these cruel and ruthless men, Meliodas and the others engage in a fierce battle with the "Six Black Knights"!