The Alvarez War was ended before many people died, and Fairy Tail wants to celebrate. Makarov decided to ask Zeref and Acnologia for an alliance, and also to ask them while on vacation. How will they do that? By asking Acnologia, Zeref, and some of the 12 to come with them! In Makarov's eyes, this will be a good way to form a bond between his 'children' and his soon-to-be allies. But in a certain she-devil's, this vacation is the perfect opportunity to get all her favorite couples together. The unsuspecting guildmaster has no idea how much trouble he started for his poor 'children' when he put Mira in charge.