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.
"The Seven Deadly Sins: Prisoners of the Sky" — movie produced in Japan and released in 2018. It has a great rating on IMDb: 7 stars out of 10. It is a feature-length film with a runtime of 1h 39min. "The Seven Deadly Sins: Prisoners of the Sky" is currently available to stream on Netflix. Click on a playlink to watch it now!