The “Seven Deadly Sins”—a group of evil knights who conspired to overthrow the kingdom of Britannia—were said to have been eradicated by the Holy Knights, although some claim that they still live. Ten years later, the Holy Knights have staged a Coup d'état and assassinated the king, becoming the new, tyrannical rulers of the kingdom. Elizabeth, the king's only daughter, sets out on a journey to find the “Seven Deadly Sins,” and to enlist their help in taking back the kingdom.
The worst episode of "The Seven Deadly Sins" is "We'll All Be Your Strength", rated 4.9/10 from 843 user votes. It was directed by N/A and written by N/A. "We'll All Be Your Strength" aired on 3/31/2021 and is rated 1.3 point(s) lower than the second lowest rated, "The End of a Long Journey".
Escaping purgatory, Ban faces the Demon King, who now possesses Meliodas’ body. Elizabeth and the others make their way into the spirit world.
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Peace returns to the Kingdom of Liones. Although Elizabeth is still under a curse, Meliodas assures her there is a way to break it.
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Ban searches purgatory for Meliodas. King, Deriri and the others head to Heaven's Theater to rescue Elizabeth, who's been abducted by Estarossa.
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Writer: Rintarou Ikeda
Now that Meliodas is the Demon King, he cannot remain on earth. Though his friends acknowledge his fate, they are unable to accept it.
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As the kingdom begins to rebuild after the coup attempt, the king honors the Seven Deadly Sins for their bravery with a medal ceremony.
Director: Tomonari Tanaka
Writer: Takawo Yoshioka
Merlin's spell thwarts Meliodas' transformation. The Holy War seems to be over, but Elizabeth senses something is still terribly wrong.
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Escanor converts all of his life energy into magic to defeat the Demon King. Meliodas pleads with his comrade to stop, but Escanor refuses to listen.
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Arthur's battle with Cath comes to an epic conclusion. The Seven Deadly Sins go their separate ways as peace returns to the world once again.
Director: N/A
Writer: Rintarou Ikeda
Reunited once again, Ban and Meliodas prepare to face the Demon King, who they suspect holds the key to their escape from purgatory.
Director: N/A
Writer: Rintarou Ikeda
Merlin rescues Elizabeth, who barely evades a falling boulder on her way to the Demon Realm with Meliodas. The Sins realise the Demon King is alive.
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Writer: Rintarou Ikeda
King struggles to fend off the giant Albion sent to destroy the Fairy King's Forest. Galand of the Ten Commandments appears before Meliodas.
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Zeldris and the Sins corner the Demon King in both realms, but the King separates from his son's body and possesses Britannia itself as his new vessel.
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Writer: Rintarou Ikeda
The long-fought Holy War comes to a dramatic end. Peace returns to the Kingdom of Britannia once again, but a new threat looms on the horizon.
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Writer: Rintarou Ikeda
With Fraudrin's manipulation of Hendrickson, the Ten Commandments return to the physical realm. King follows Ban to the Fairy King's Forest.
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Elizabeth and Meliodas face the Demon King, who now possesses the body of Zeldris. Meanwhile, the Sins clash with a beast summoned by the Demon King.
Director: N/A
Writer: Rintarou Ikeda
Diane destroys the source of the Demon King's magic. Meanwhile, Escanor continues fighting the Demon King at full power, exceeding his limits.
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A vicious beast in his true form, Cath attacks the reawakened Arthur. Now separated from the Sins, Merlin attempts to take on the monster herself.
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Diane confronts Gowther after he manipulates Guila and Zeal's memories. With the return of the Demon Clan, new threats descend upon allied clans.
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Chandler and Cusack merge to form the all-powerful Original Demon. Merlin gives up any hope of victory, but Mael and King soon come to her aid.
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Meliodas agrees to help Elizabeth, revealing how his business has been travelling from place to place to acquire information about the rest of the Seven Deadly Sins as well and letting her join him. The two, along with Hawk, soon stop over at the Bernia Village, a village famed for their delicious Bernia ale and its primary source of income. However, a Holy Knight Gilthunder has planted his sword in the center of the town, stopping all water sources. Despite the villagers' futile efforts, Meliodas easily removes the object and is hailed as a saviour of the Bernia Village. Gilthunder, wanting to confirm whether the removal of his sword was an accident or not, throws a spear imbued with his power towards the town, which is reflected back in the same direction by Meliodas, destroying Fort Solgales, Gilthunder's current location, and missing his head by centimetres.
Director: Hideki Ito
Writer: Shoutarou Suga
Gowther reveals that his creator, the real Gowther, cast a forbidden spell on Mael and all those who knew him to end the Holy War 3,000 years ago.
Director: Yoshinari Suzuki
Writer: Rintarou Ikeda
With Escanor's aid, Meliodas and Gowther reach the spirit world, where they aim to split the Demon King and Zeldris back into their own bodies.
Director: N/A
Writer: Rintarou Ikeda
Meliodas, Elizabeth and Hawk travel to the Forest of White Dreams, a foggy, dense forest where even the Holy Knights avoid. Inhabiting the forest are Prankster Imps, which harbour shapeshifting abilities that confuse travellers by impersonating their companions. After defeating the Prankster Imps, they find a Giant girl asleep in the forest, who introduces herself as Diane, a member of the Seven Deadly Sins who possesses the Serpent's Sin of Envy, declaring her crush on Meliodas. This surprise reunion is soon interrupted when Gilthunder arrives, binding all of them with his lightning magic and facing Meliodas in a one-on-one fight, where the latter is dealt a severe injury. Under the pretense of dying, he acquires information about the whereabouts of two members of the Seven Deadly Sins, Ban and King, as his apparent last wish, tracing their locations to the Baste Dungeon and the Capital of the Dead respectively.
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Diane throws Gilthunder out of the forest and decides to accompany Meliodas, Elizabeth and Hawk on their travels. Their next stop is Baste Dungeon, where Ban, the bearer of the Fox's Sin of Greed, has been imprisoned for five years. However, Meliodas collapses suddenly from his injury and they decide to stop at Dalmary Town, letting a doctor named Dana treat him with medicine. There, Diane and Elizabeth both show care for Meliodas, but display envy towards each other due to their opposites in strength and size, with Diane ultimately deciding to leave to find Ban herself. Unbeknownst to them, Dalmary Town is currently under the rule of the Weird Fangs, a unit in the Holy Knights, who are determined to kill Meliodas and Diane, and capture Elizabeth. Dana also unexpectedly reveals to a shocked Elizabeth that the supposed medicine he administered is a deadly poison, while Golgius, a member of Weird Fangs, appears out of the blue to escort her back to the Kingdom of Liones.
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The third princess of the Kingdom of Liones, Elizabeth, finds Meliodas, who is the owner of the Boar Hat bar and is also one of the Seven Deadly Sins. With her identity revealed, she is pursued by Twigo whom Meliodas easily defeats. The princess joins him on his journey to find the other Deadly Sins in order to defeat the Holy Knights, who have orchestrated a coup d'état and have overthrown the king.
Director: Tomokazu Tokoro
Writer: Shoutarou Suga