Natsu confronts Jackal and overpowers him at first; however, the Demon Gate's curse displays a formidable side effect, knocking Salamander unconscious. After he dispatches Lucy and Wendy, Jackal chases the run-away Michello and makes Lucy choose between Michello's life or a pregnant woman's, but is interrupted by Natsu again, who already knows how to deal with the Tartaros man's power.
Summary :

As
Natsu and
Jackal glare at each other, the
Fairy Tail Mages recognize the bomber as the perpetrator who took down the
Magic Council single-handedly.
Jackal smirks and proceeds to do several hand gestures and generate power, causing the wind to blow and several explosions to emerge from the town they are in, successfully hitting all buildings in the vicinity. Shocked,
Lucy quickly remarks that the town has nothing to do with
Jackal's business.
Natsu, on the other hand, proceeds to charge on to the
Tartaros man, who attempts to counter the
Fire Dragon Slayer with his explosion. Much to
Jackal's shock,
Natsu, who seemingly took a direct hit, eats the explosions, with
Happy explaining his partner's affinity when it comes to
Magic relating to heat and explosions.
Natsu overpowers
Jackal with his
Magic and continues to repeatedly attack him.
Michello shakes at
Natsu's display of power, mentally saying that it is his first time witnessing a
Fairy Tail wizard's fight against somebody.
Jackal tries to say something to
Natsu, but the latter still continues to physically attack him - with the people around him saying he is going overboard already.
Michello, on the other hand, mentally worries about
Face,
Tartaros' possible goal, that anyone on the
Council hardly knows about. The former councilman panics and says he needs to take his leave immediately. The others find this strange, and
Natsu asks him to tell them what he knows, that of which he continues to turn down.

Hearing what they conversed about,
Jackal sits up from his position and proposes that if the old man shares some useful information, he might reconsider his goal of killing the former member of the
Council. Moreover, the
Fairy Tail members display their shock as to why the man stood up, given the intense beating he took from
Natsu.
Michello insistently claims that he knows nothing and orders the
Mages to dispose
Jackal at once. The
Tartaros guy stands up once again, and tells
Natsu to listen if someone is talking to him. Afterwards,
Lucy exasperatedly notices
Natsu's hands illuminating with strange markings.
Jackal explains that his curse grants him the ability to turn anything he touches into an explosive, consequently asking
Natsu how many times he has touched him already. As the markings begin to illuminate even brighter,
Natsu orders the others to get away from him as far as possible. The others reluctantly obey and run away from him.
Natsu tremendously explodes and gets knocked to the ground unconscious.
Michello disrespectfully remarks that the
Fire Dragon Slayer is all about bark and no bite, and afterwards, scared of the possible thing
Jackal will do to him.
Jackal slowly approaches, demanding
Michello to tell him what he knows in order for him to spare his life, only to take his granddaughter's instead.
Michello refuses and runs away from the
Tartaros man, who chases him.
Lucy and
Wendy then work together to try stop
Jackal.
Wendy uses her
Magic but
Jackal successfully stops every attack by dispersing them with his explosions.
Lucy tries to help by summoning
Scorpio, but
Jackal counters his
Magic with his powerful explosives.
Scorpio continues to attack but causes the others to not see properly because of the sand, forcing
Lucy to make him go back.
Carla and
Happy comment and praise the power of
Jackal's Magic, to which he explains as something even more powerful - a
Curse, something far more superior which all members of
Tartaros use instead of
Magic. He states that mere
Wizards can't beat them and casts a powerful explosive spell, damaging and throwing
Wendy and
Lucy away.
Jackal says goodbye, and proceeds to jump from roof to roof to chase
Michello, leaving
Michelia to worry.
Lucy ask
Wendy to heal
Natsu as she goes after
Jackal.
Michello is seen running around town, hopelessly asking for help from the townspeople; however,
Jackal finds him, commenting on how he left his granddaughter for the sake of his own life.
Lucy appears and attempts to summon a
Celestial Spirit but is interrupted at
Jackal's sudden warning, that if she moves while stepping on a cursed mine, she will explode. Townspeople recognize
Lucy and her participation in the
Grand Magic Games. Due to the abundance of people around,
Jackal thinks of an idea.
Michello and a random woman from the crowd are then engulfed in a sphere.
Jackal threatens everyone about a future explosion, causing them to run away in fear. The
Curse user leaves
Lucy with a hard choice, saying that he will only detonate only one of the two, according to the
Fairy Tail Mage's decision. As the others struggle to wake
Natsu up,
Lucy painfully thinks of what to decide - to save
Michello, their intent in the first place, or the pregnant woman.
Jackal states humans are simply toys and tells
Lucy that she only has ten seconds to decide and she shouldn't move, otherwise, she will explode and both of the trapped people die.

With
Jackal about to demand
Lucy's choice,
Natsu comes from above and punches the man's face, cancelling both
Jackal's landmine and spheres.
Happy and
Carla offer to take the pregnant woman to a safe place, and
Natsu smacks
Michello to sleep for pissing him off. With the others warning
Salamander about the superiority of a
Curse to
Magic,
Jackal states that
Natsu touched him again, but the latter says he has the hang of it. Just as the marking from his body is about to explode,
Natsu eats the explosion, barely damaging himself, much to the others' joy.
I can't help but think that Jackal is cute every time I saw him XD