Cady wakes up in an old cabin. She pretends to be unconscious while a man tells another man named Michael Brenner to take her into the woods and kill her. She also has no idea who she is, or anything about her life, not even her name
Michael Brenner drags her out to the forest to kill her, but Cady, almost without controlling her body, does some karate like moves and smashes Brenner's head on a rock. She takes his phone, his wallet, and his keys to his car, and starts driving away from the cabin.
Cady then drives out to a mall, not knowing where she was going, and eats some food. She sees two men in uniforms searching her car and suspects it is the same men that wanted to kill her. She there meets a young boy named TY who helps her escape back to his house.
After doing research and piecing together the clues of her real life and figuring out who she is and why people want to kill her, Cady finds out that she has a family that lives in Portland. She goes along with Ty to Portland to find her family.
Cady meets up with who she thought was her aunt, Elizabeth Quinn, and finds out people are trying to kill her because of an important vaccine. This woman turned out not to be her aunt, and is just working with Micheal Brenner, the man who she thought she had killed. This vaccine is a cure to a lethal disease, and her parents made it to cure her brother, who has that disease.
Cady and Ty go to Z - Biotech and get the vaccine that everyone was trying to kill her for. Cady grabs the vaccine for her sick brother, and burns the whole lab down. She then goes and reunites with her family members.