The TransCare project focuses on young people’s transitions from out-of-home care into adulthood. Research from other countries has shown the vulnerability of young people leaving residential and foster care, and the impact on such aspects as educational success, employment, family situation and mental health. The overall ambition of TransCare is to generate detailed and systematic knowledge of the complexities of young people’s transitions from out-of-home care (including residential and foster care) into adulthood in Luxembourg, with particular attention to young people’s own perspectives and experiences. We seek to identify factors that hinder or promote successful transitions, so as to be able to make a research-informed contribution to the improvement of support for young people’s transitions. The research will analyse the development of young people’s lives and further transitions after having left out-of-home care, and the transition process from out-of-home care itself. Our focus on young people’s own experiences seeks to explore the ways in which young people are and can be active agents in the transition process. The research is informed by recent literature on transitions and on agency. It combines quantitative survey research with qualitative ethnographic and biographical methods.