While searching for a troublesome mage, the Fairy Tail guild members become separated in an unknown town. Similarly, Haru, Elie, and their group also get divided. Fortunately, Elie runs into Lucy and Happy, who are looking for Natsu, and Haru finds Natsu struggling with motion sickness. However, Elie matches the description of the troublemaker that Fairy Tail was tasked to locate, and Natsu becomes suspicious of Haru's relationship with her. Fairy Tail x Rave is a crossover that reveals the commonalities between the two groups. Despite the misunderstandings leading to a conflict of powers, they must work together to overcome a shared enemy.