Katie Price, 17, has been confined to her home since childhood due to a rare genetic disease that prevents her from seeing sunlight and puts her life at risk. Always accompanied by her father Jack, Katie's routine begins at dusk, when she goes out to walk around places and play her guitar. For years, through her bedroom window, she secretly spied on young Charlie, until one night her dreams come true and she meets him in person. The connection is immediate and together they embark on a summer romance. However, her illness starts to get worse and now she doesn't know if she will be able to live a normal life together with her soulmate.