Kingdom Infiltration arc

The Kingdom Infiltration arc (王国侵入編, Ōkoku Shin'nyū-hen) is the seventh story arc of the series, starting from the 60th chapter and ending on 100th chapter.

Description
The Seven Deadly Sins talk about a plan to retrieve Meliodas' Dragon Handle from the Holy Knights of Liones. However, Elizabeth was kidnapped by a mysterious Holy Knight and taken to Liones, and Meliodas, Ban and Gowther are thrown to Liones by Diane at high speed to save Elizabeth and gain back the Dragon Handle. Meanwhile, the Holy Knights has some trouble of their own as some of the Holy Knights start to question their goal, and the new king of Camelot, Arthur, pays a visit with a large army of Holy Knights from Camelot.

Fights and Events

 * Meliodas, Ban & Gowther vs. Holy Knights of Liones
 * Diane vs. Dreyfus, Gilthunder, Howzer, & Helbram
 * Arthur vs. Hendrickson
 * Howzer & Guila vs. Dreyfus, Helbram, Jericho, & Gilthunder
 * Gowther vs. Slader
 * Gowther vs. Dreyfus
 * King vs. Helbram (Kingdom Infiltration arc)
 * Meliodas & Arthur Pendragon vs. Hendrickson & Gilthunder
 * Meliodas vs. Hendrickson, Gilthunder & Vivian
 * Gilthunder vs. Hendrickson
 * Holy Knights of Liones vs. New Generation Holy Knight/Demon Hybrids
 * Meliodas vs. Ban
 * Meliodas, Diane, Ban, King & Gowther vs. Hendrickson
 * Holy Knights of Liones vs. Hendrickson
 * Meliodas vs. Hendrickson

Story Impact

 * Hendrickson's reason for resurrecting the Demon Clan is revealed.
 * The Seven Deadly Sins infiltrate the Kingdom of Liones to rescue Elizabeth.
 * Most of the Holy Knights, such as Guila, Howzer, Slader, and Gilthunder join the Deadly Sins' side for one reason or another.
 * Gowther demonstrates the usage of his Sacred Treasure, Twin-Bow Herritt.
 * Arthur Pendragon appears with his friend and mentor Merlin.
 * Ban locates the Horn of Cernunnos and is requested by a Goddess to kill Meliodas in order to revive Elaine.
 * Gilthunder is no longer under the subjugation of Vivian, and reunites with Margaret Liones.
 * Baltra Liones is set free and decides to visit the Kingdom of Camelot, with Arthur and Merlin, to heal himself.
 * Hendrickson stimulates the Demon Blood inside the New Generation Holy Knights, transmuting them into hybrid Demons.
 * Helbram is revealed to have already died twice, with Hendrickson reviving him repeatedly. Helbram finally died for the third time.
 * Ban attempts to kill Meliodas, but agrees to save the kingdom first.
 * Hawk was killed by Hendrickson Dead End by protecting the injured Meliodas, but somehow came back to live, but shrunken.
 * Veronica Liones is revealed to be alive, possibly due to Elizabeth hidden power.
 * The Seven Deadly Sins are cleared of their name for their crime.
 * Holy Knights learn the error of their ways and agreed to continued to protect the people.
 * Baltra Liones return his duty as the king of Liones.
 * Elizabeth discover her magical ability through her right eye.
 * Hendrickson was finally defeated by Meliodas' Revenge Counter.