The match between Wendy Marvell and Chelia Blendy continues, with Chelia using her ultimate move. Elsewhere, Jellal watches the match, noting the dark magic. However, as the battle ends, he realizes that the evil aura is coming from someone else. As he tries to chase the mysterious person, he is quickly intercepted by Doranbolt and Lahar.

As Fairy Tail happily parties in a bar to celebrate their earlier victories, others all around Crocus contemplate the harsh realities of things they have witnessed on the third day, and those to come. Malice also lurks in Sabertooth, as, in the Naval Battle event the following day, Minerva succeeds in brutally attacking Lucy as a demonstration of her guilds power.

Whilst Lucy is in the infirmary due to Minerva's cruel play in the Naval Battle event, Fairy Tail Team A and B are forced to merge to even out the odd number of teams. With tension building between Sabertooth and Fairy Tail, the tag battles begin with Team Blue Pegasus against Team Quatro Puppy, the man in the blue bunny suit finally revealing his identity.

The fourth day of the X791 Grand Magic Games continue with the second match of the day, Lamia Scale against Mermaid Heel. Both sides struggle to win, only to end the battle in a draw, leading to the beginning of the last match between Fairy Tail's and Sabertooth's Dragon Slayers.

The fourth day's final battle between Sabertooth and Fairy Tail kicks off with Natsu and Gajeel proving themselves as formidable opponents against the Twin Dragons of Sabertooth, but when push comes to shove, Sting and Rogue decide to utilize their trump card and turn the tides of the battle.

The tag battle of the Dragon Slayers comes to a close, with Natsu intrepidly overpowering the combined attacks of Sting and Rogue. The Sabertooth members watch in dismay, whilst Jiemma seethes in anger over the defeat of the Twin Dragons, causing the nearby spectators to be frightened away. On the contrary, the rest of Fairy Tail celebrates in joy as its team receives 10 points, finally surpassing Team Sabertooth by only a single point. Meanwhile, Gajeel, back to his senses after being dragged by Natsu into a cart earlier, stumbles upon a cave full of dragon skeletons, much to his shock. And during that night, Jellal finally manages to corner the source of the dark aura, standing in complete disbelief at the identity of the mysterious, hooded person.