A neglected, ill-tempered girl is sent to live at a remote manor where she uncovers a hidden, locked garden and, aided by a nature-skilled local boy and her fragile cousin, works to restore it. Tending the garden becomes a vehicle for physical revival, emotional softening, and growing friendships among the children and with an elderly gardener. The narrative traces their gradual transformations through discovery, care, and the reclaiming of a secret place, emphasizing the healing influence of nature, companionship, and hopeful renewal. Episodes alternate between domestic detail and pastoral description, leading from secrecy and illness toward openness and vitality.