7 days, 7 months, 7 years

Before he joined the guild, Natsu was happily living with his father Igneel; but something happened one day that separated them forever. Now, memories of that time have come to haunt Natsu, and his friends try desperately to bring Natsu back to the present. Meanwhile, a new threat arises that has Fairy Tail thrown into a decade long conflict, that is somehow tied to Natsu's past.