Mavis finally reveals the secrets of her past, including her connection with Fairy Tail, Zeref, and her own sin. The ever-turning gears of fate offer glimpses of hope, but also produce one final, tragic contradiction.

Before the battle for Fairy Tail's existence begins, the guild members spend the final night in their own ways. But when Alvarez's vast army launches a surprise attack, Fairy Tail's bond of solidarity is put to the test.