I'm sure that everyone has at least once seen a story along the lines of "After Lisanna comes back, Lucy is ignored and leaves the guild to become stronger" or something like that. This is about the same thing, but instead of Lucy, it's Erza. One day, before the S-class exam, Erza decides to leave on a 10-year quest. Everyone thinks that she can handle it, since she's an S-class mage, but what if she doesn't return? The guild members presume that their beloved Titania is dead, and mourn over her endlessly. The main members go missing during the S-class exam, and come back seven years later. They hear of a mage guild called Sabertooth and learn that it is the strongest mage guild. When they participate in the Grand Magic Games, hoping to defeat Sabertooth and reclaim the title of the strongest guild, they have no clue that Sabertooth's strongest member, Red, has the same scarlet hair as their beloved Titania.