What Just happened ? part 2

As Kai passed by various apartment doors, He heard a child crying,It was a female who Kai immediately recognized her voice it was his ex-girlfriend's niece,Sarah who was about 11 years old. As Kai barged into the room he immediately analyzed the situation and realized what happened, Sarah was crying near the window as she saw the blood and bodies on the streets far away, Kai immediately grabbed her and rush her out of the room and took her to his own room where he quickly grabbed his camping gear and because of the radiation, he also tied a piece of cloth and wrapped it around his and Sarah's nose to prevent radioactive dust from entering there nose he also instructed Sarah to wear clothes covering her entire body before they headed out to the city

Will Kai and Sarah survive?

What happened to Sarah's aunt ?

READ TO FIND OUT