In the year 2016, Sam James Carter's life is turned upside down. One day while walking home from school, a dangerous young girl named Sophie Brooks tells him of his sister's murder that occurred while she was working for a secret US government agency. Sam seeks vengeance for his sister's death, and vows to find the murderer. Sophie agrees to join him and they embark upon a head- spinning journey to obtain revenge for his sister. As events progresses nothing is what it seems: anything could happen. Will Sam and Sophie find and bring the killer down or will the assassin elude them forever?