After the events in Serenity, many years passed by, until another major crew arrives at Serenity and joins up with the survivors of Serenity to search for Raza and his men. In order to prevent another attack from Raza and his army, they agree to go back in time and change events that led to Raza's birth. This is how Firefly ever came back in existence. However, this was not an easy journey for them as they encountered many problems on their way back in time. They also encountered many unforeseen problems along the way and had to deal with them accordingly. Firefly ever came back because they never gave up on their mission and they always had faith in themselves that they could change history for the better. Firefly ever came back as an optimistic character who never gave up on their mission and did everything possible to keep their faith alive and strong. They even fought against all odds in order to achieve their goal.