After their fight with Dan Straight and Samuel, Natsu and company return to the guild where Lucy explains the meaning behind the book Key of the Starry Heavens. She explains that her father's memento is one of six parts of a clock that, if put together, would cause chaos to descend upon the world. She concludes that the five other parts are hidden in the places where the book was based on and says that she is going to go look for them. Makarov agrees with her, saying that chaos descending should be avoided. Erza agrees and says that they should split up.[1]
Erza is grouped with Wendy, Carla and Cana and the four hikes across a grassy area. As Wendy, Carla and Cana talk about the girl in the book, Erza lays out a blanket and some food and invites them to a picnic. Carla says that they cannot afford to waste time since the Legion may get the key part before them. Erza, however, insists that they have a picnic and begins to eat but is interrupted when a group of men arrives, asking them if they have permission to have a picnic in their land. The group of men then notices that they belong to Fairy Tail and, knowing about their mission, asks them to hand over the "treasure". The group then begins to eat Erza's food and a furious Erza requips into her Lightning Empress Armor.[1]
Erza unleashes her Lightning Magic on the group, attacking them with multiple bolts of lightning. She then charges her spear with lightning and creates a powerful explosion, causing the group to be blown away.[1]
The group the continues their journey and manages to find its way to the Magical Library, the location of one of the missing key parts. As she examines the books, Erza finds herself face to face with a member of the Jiggle Butt Gang.[2]