Fourteen years have passed since the Kingdom of Liones vanquished the Demon Clan, ushering in an era of peace. Prince Tristan grapples with a dual heritage of immense powers inherited from his parents: the Demon Clan prowess of his father, Meliodas, once the fearsome Dragon Sin of Wrath among the Seven Deadly Sins, and the celestial abilities of his mother from the Goddess Clan. As danger looms over Elizabeth, Tristan, burdened by his uncontrollable gifts, escapes to Edinburgh. There, he encounters Deathpierce, a former member of the Holy Knights known as the Pleiades of the Azure Sky. Amidst this mysterious meeting, questions arise about Deathpierce's true motives. The relentless turn of fate ensnares not only the fabled Seven Deadly Sins but all those caught in its unyielding grasp.