Lisanna's back and Lucy feels left out. Natsu wants Lisanna back on his team, What about Lucy?

At that one time and that one place, Lucy and Natsu made a promise to stick to each other like glue. Although, it seems that with each passing year, Natsu gets farther and farther away from Lucy - either because he's taking an interest in other girls, or he's taking an interest in other girls. "You can't, Luce. You can't become my girlfriend." "Why not?" NaLu. (disc.)

When the guild decides to catch up with Lisanna, someone is left in the shadows, forgotten, deemed useless. Lucy. For the sake of her aching heart, she temporarily leaves Fairy Tail, succeeding in becoming stronger and finding herself amongst new companionship. However, things don't exactly go according to her plans, in both the good way and the bad way.