In 2019, twelve years after the death of his grandson Tommi, Risto Kurtti receives a mysterious letter at his home in Helsinki. Told between 2007 and the present day, taking in the stunning scenery of Finland and Greece, Room 301 peels back the layers of a complex family and uncovers what really happened the day Tommi died. It’s a story about secrets and the lies that bind us; what we will do to protect our children; fathers and sons and coming to terms with ourselves.