The first line nurse managers’ opportunities to lead nursing care seem to be diminishing. The aim of this study was, therefore, to gain an understanding of the first line nurse managers in their experiences in the development of nursing care as part of a wider research programme. Finnish nurse managers wrote narratives at the beginning of five different leadership courses in this grounded theory study. ‘Preparing the Air for Nursing Care’ emerged as a core category. It was formed by two major categories. ‘Being Concerned about Nursing Care’ describes the nurse managers’ focus on the development of nursing care, the nursing caregivers’ health and knowledge and a concern for the whole organisation. The second major category ‘Creating the Direction and Content of Nursing Care’ describes the nurse manager working together with the staff to create individual and family-centred best practice, initiating relationships and dialogues for nursing care, and a culture of caring. A typology was created that explained the four main modalities to emerge from the data: ‘the Active Developer’, ‘the Passive Thinker’, ‘the Impulsive Creator’ and ‘the Routine Manager’.