"Freeport colony: a notorious den of pirates, smugglers and thieves. Wufei persuades one of its denizens, his one-time ally Duo, to help him catch a killer hiding there. Agent Chang thinks he knows what to expect, from this case, from Freeport and from Duo Maxwell. He couldn't be more wrong."

butterfly effect, n. 1. A tenet of chaos theory that describes how small actions can have large effects. 2. A Final Fantasy VII AU working off this premise. When a little blond boy awakens an old Turk from his long sleep, no one could've guessed how things would change.