Traveling in search of the rare ingredient, “sky fish” Meliodas and Hawk arrive at a palace that floats above the clouds. The people there are busy preparing a ceremony, meant to protect their home from a ferocious beast that awakens once every 3,000 years. But before the ritual is complete, the Six Knights of Black—a Demon Clan army—removes the seal on the beast, threatening the lives of everyone in the Sky Palace.

After two years of studying within the Reiken clan, Ōriku and other inexperienced disciples are ordered to descend to the temporal world for further studies, and Ōriku embarks the journey back to his birthplace.

The show revolves around Ichigo Kurosaki, a good-hearted 15-year-old high school student who carries the undesired ability to see spirits. Others in his family (two sisters and his father) carry this ability to some extent as well. One evening, he encounters Rukia Kuchiki; a Shinigami, or Death God. It is her job to usher lost spirits to Soul Society, and to also eliminate those which cross over from the Hollow World.