Fairy Tail {Lost Dragon Slayer}

Chapter 20 {Abyss Dungeon}

Meanwhile at the castle, Natsu's group manage to find Lucy and Yukino's cell and melt the bars, freeing them. The group are set to leave but Lucy wishes to get her keys back. However, the floor in the hallway suddenly opens up, dropping the group in an underground area with an archway exit. A video of Hisui pops up, the Princess telling the group that they've fallen into "Abyss Palace," where criminals do not last long. She accuses the group of being thieves and tells them they can rot in the underground dungeon. The guards congratulate the Princess on protecting the castle with the King away, but Hisui doesn't seem happy about the success.

Fairy Tail members and Yukino try to find a way out, with Carla managing to discover a narrow crevice path. They manage to squeeze their way through, but are met with the form of a badly beaten Arcadios on the floor. When they awaken him, he tells them to run away, as five mysterious figures appear out of nowhere and attack them one-by-one. Arcadios then reveals them to be an independent team of executors that supports the kingdom from the shadows, the Garou Knights. The ex-knight states that because of them, it is impossible to escape the Abyss Palace, while the apparent leader of the enemy claims to have orders to kill all of them

Natsu laughs at the group for their appearance but Arcadios warns him that they have Magic to kill efficiently. Natsu isn't phased and prepares to battle them alongside Wendy, Panther Lily and Mirajane who order Lucy, Yukino, Happy and Carla to stay back. Two of the Knights, Cosmos and Kamika, attack first, with the group just barely managing to defend each other from the knights onslaught.

Becoming excited, Kamika and Cosmos pick up the pace, unleashing even larger attacks and even paralyzing them. Wendy manages to save them and, in trying to destroy one of Cosmos' spells, Mirajane, Natsu and Panther Lily cause a huge explosion, crumbling the cavern walls and separating everyone in a landslide.