Kingdom Infiltration arc

Kingdom Infiltration arc is the seventh arc of the series. It encompasses 25 chapters, starting from the 60th and 84th.

Description
The Seven Deadly Sins talk about a plan to gain back Meliodas Dragon Handle from the Holy Knights of Liones. However, Elizabeth was kidnap by a mysterious Holy Knight and took her to Liones, where as Meliodas, Ban and Gowther were toss to Liones by Diane in a high speed to save Elizabeth and gain back the Dragon Handle. Meanwhile, the Holy Knights has trouble on their own as some of the Holy Knights started to question their goal, and the new king of Camelot, Arthur, pay a visit with a large army of Holy Knights of Camelot.

Fights and Events

 * Meliodas, Ban & Gowther vs. Holy Knights of Liones
 * Diane vs. Dreyfus, Gilthunder, Hauser, & Helbram
 * Arthur vs. Hendricksen
 * Hauser & Guila vs. Dreyfus, Helbram, Jericho, & Gilthunder
 * Gowther vs. Threader
 * Gowther vs. Dreyfus
 * King vs. Helbram (Kingdom Infiltration arc)
 * Meliodas & Arthur Pendragon vs. Hendricksen & Gilthunder

Story Impact

 * The purpose to unseal the Demon Clan was revealed to have someone to fight in the Holy War.
 * Elizabeth Liones revealed to be the last key to unseal the Demon Clan.
 * Seven Deadly Sins finally infiltrated Kingdom of Liones.
 * Most Holy Knights, Guila, Hauser, Threader, and Gilthunder join the Deadly Sins side for one reason for another.
 * Merlin old castle was destroyed by Diane.
 * The Sacred Tree that made Chastiefol been revealed.
 * Gowther revealed that he still has his Sacred Treasure, Twin-Bow Herritt.
 * King Sin was revealed to be that he let Helbram go on a human killing way for five hundred years, but didn't stop him.
 * King and Diane were friends in the past, but King erase Diane memories of himself.
 * Arthur Pendragon appeared long with his friend/mentor Merlin who is the member of the Deadly Sins.
 * Gilthunder revealed his reason for joining the Holy Knight, and was set free by Meliodas and reunite with Margaret Liones.
 * Bartra Liones was set free, but went to Kingdom of Camelot to heal with Arthur and Merlin.
 * Liones castle was destroyed by Hendricksen
 * Hendricksen revealed that he is the same kind as Meliodas.
 * Hendricksen active the Demon Blood inside the New Generation, making them hybrid Demon and start attacking Liones.
 * Jericho transform into a fully Demon while Guila try to hold back.
 * Ban found the Horn of Cernunnos and was requested by the Goddess Clan to kill Meliodas to revive Elaine
 * Helbram was dead all along, but Hendricksen revive him as a slave.
 * Ban try to kill Meliodas, but agree to put it on hold to save the kingdom.