Danny Fitzwilliam, suffering from severe OCD following the sudden and unexpected death of his partner Lucy, agrees to detail his thoughts and actions in a diary for one month in order to allow his therapist to fully assess the nature of his condition. Follow his rollercoaster ride alongside his faithful canine companion Coop, and his not so faithful nemesis Brainy, as his daily existence becomes a constant battle with his own head, one full of systems and survival techniques.