After a massive explosion at the Sears Tower two of 51's finest were severely injured. While many tried to move on and focus on work others couldn't. Severide became obsessed with the case pulling away from everyone trying to figure out what happened on that day. Romances with strengthen and lovers will quarrel. Will 51 be able to recover from this or will it all come crashing down in a plume of smoke? DISCLAIMER:I DO NOT OWN ANY OF THE MAIN CHARACTERS THAT HONOR GOES TO DICK WOLF.