Be Careful!

A foreign student named Aiden .Aiden was walking by like every other day when he got caught by a robber that was about to kill him.In change for his release, the robber asked for a girl, Callie was the girl,Aiden's classemate.He wanted her for dirty stuff .Aiden had nothing to do, just accepting the robbers deal.
You are going to ask ,After Aiden got released the robber wont find him anymore? He could've called the police? Or just change the city?
You are wrong, the anonyme robber is a professional hacker that know's every single peace of information that is related to Aiden.
The next day Aiden went to the university as always, but this time he hade a message to report .It took him all day so he can talk to Callie .06:00 pm. when he finally talked to her, he told her what happened the day before,at the start she didn't beleive him what was normal of a reaction, but he tried his best to convince her that it was not a prink or some sort of things. After a long discussion of explaining,his last words were "Be Careful"...