Selene becomes Diabolos's new mistress to recruit Suzaku and his colleagues, the Dark Dragon Slayer Knights — Kirin, Haku, Misaki — in the hunt for the other Divine Dragons. To do this, she sends them to retrieve the second disembodied heart of Elefseria in the Great Dogra Labyrinth (a dungeon made of the remains of Dogramag, a sixth Dragon God killed by Elefseria). Natsu's team visits Elefseria for more information. Selene pits the team, Gajeel, and Laxus against Diabolos's strongest members in a race for the heart. Wendy and Laxus duel Haku and Kirin, with Irene helping Wendy defeat Haku. Natsu, Erza, and Lucy face Suzaku, Misaki, and Kiria.