This is the first FanFiction I have written, so any reviews would be very helpful.

Rapture. Once a city in its prime, built and ruled by Andrew Ryan, then by Frank Fontaine. After Hephaestus blew, it was run by the Rapture family, with Sophia Lamb at the helm. Big Daddies roamed the streets, using Little Sisters to collect ADAM from the insane population of Splicers. At one time, it was the pinnacle of brilliant engineering and scientific development. Now however, there wasn't a place in the crumbling city where you wouldn't find trash, broken furniture and bottles, Splicers killing each other brutally for food, supplies, and ADAM.

Sections of the city were now completely collapsed, and others were flooded, making them completely inaccessible. Water dripped from windows, the walls, and the ceiling. The Gatherer's Gardens were mostly all destroyed, Splicers searching for plasmids and ADAM. It was rare now to see a Big Daddy, either patrolling one of the non-flooded sections or making repairs to machinery, and even rarer still to a Big Daddy with a Little Sister. The screams of Big Sisters however, were fairly common compared to the sound of Big Daddies tramping around.

Since Jack and Subject Delta either harvested or saved all of the Little Sisters they found, the Big Sisters were the ones harvesting the most ADAM in Rapture now. It would not be uncommon to see one jump down from the ceiling, stab a Splicer through the heart, drain the ADAM out and then leave, all in the space of a few seconds. The small amounts of sane population remaining were smart enough to stay as far away from ADAM and Splicers as possible. Gunshots and explosions were regular noises heard throughout Rapture, as were maniacal laughter and pained screams.

In a deep, secluded part of Arcadia lived a mother, with her son and her daughter. She taught her children essential skills to survive in rapture, like how to hide in plain sight, how to shoot, how to fight in hand to hand combat, how to scavenge useful materials, to stay away from ADAM, gene tonics and plasmids. She had taught them how to survive. She had a secret however; one that would cost her her life and throw her son and daughter into a hellish nightmare neither would wake from for a very long time.