Marcus (Richard Gibson) invites his classmate and good friend Leo (Michael Radcliffe Michael Redgrave) to his home to play. In this way, Marcus meets Leo's sister Marian (Julie Christie Julie Christie). Marcus is very impressed by the beautiful and kind Marian. Marcus has an infectious disease and can't play with Leo, so Leo gets to know a farmer named Ted (Alan Bates Alan Bates). Ted Bates Leo sends a message to Marianne, and Leo says yes. After that, Leo makes friends with the veteran Hughes (Edward Fox Edward Fox) and is shocked to learn that Marianne's family is going to betrothed her to Hughes. Not only that, Leo is also surprised to find that the letters he sent for Ted and Marianne are actually their love letters.