Teresa wakes up in a hospital bed. The last thing she remembers is losing control of the car and heading for the central reservation. The rest is a muddle of flashing lights and torrential rain. She tries to sit up but nothing moves. It is as if her body is not her own. When Teresa's husband, Mark, decides to unburden himself by confessing that he is having an affair, he doesn't realise the impact this will have on her and his sons. He sets off a chain of events that reverberates throughout his whole family and changes the lives of those he loves forever. The doctors diagnose Locked-In Syndrome. Teresa is effectively locked inside her own body and unable to communicate with anyone. It is a nightmare from which she cannot wake. When she realises the enormity of her plight she cannot accept it and seeks refuge in an imaginary parallel world, a world where she is a desirable woman again. She refuses to acknowledge either the doctors or her family, but Ian, her younger son, will not let her go; he persists in every way he can to give her back the will to live.