Two teenagers are the protagonists of this story. The two girls live and develop a very intense friendship, but it's slowly becoming dangerous. Charlie is a girl of 17 years , her life has been dominated by a constant torture by doubt, disappointment and loneliness. When Sarah arrives, a very pretty and very self- confident girl, the two become in inseperable and begin to live a very close relationship. Charlie begin to feel alive and invincible, until the arrival of a new friend to end the tranquility of their friendship, turning obsessively.