Natalie Green or Natalie Curtis has lived in England ever since she left her home in America. She is the younger sister of Tobias, the profiler for team Scorpion. When Natalie is brought into the group she finds herself trusting Walter more than anyone else. But then she realises she may be falling in love. Walter doesn't realise but he is falling for her as well and will do anything to protect her. But can the team stick together when a man comes back from Natalie's life in Britain??