Y/N halstead is the youngest halstead, she has 2 brothers: Jay and Will. She is going to work at firehouse 51, as a candidate on truck 81. Her brothers don't know she's back but they soon do when Y/N gets hurt on a call... (The story is based on the first few seasons of every serie!) (It's a crossover with the series: MacGyver and Prison Break! Check those series out cuz they're awesome!)