"I'm Back" is a story about Fairy Tail that mostly revolves around the one and only Lucy. It's the time after Tartaros was defeated and Magnolia decides to celebrate for one whole week for victory. During the celebration, Lucy reflects back on her actions and takes a huge decision to leave and venture out on her own to become stronger. Meanwhile, the Grand Magic Games happens as Lucy hits the climax of her training in which she trains with 2 others. The Grand Magic Games is coming to an end and Fairy Tail's victory is on the line as well as Lucy's Heart. 3 other wizards try and pursue her heart while it's only Sabertooth's Sting and Natsu left to fight it off.