As High Growth Firms (HGFs) are considered to be main contributors to job creation, researches have tried to uncover factors that contribute to high growth. Although a number of relevant antecedents were identified, a holistic perspective on the growth process is lacking. Hence, this research in progress aims to construct an integrated conceptual model on high growth in order to better understand the growth process and also to provide valuable insights and guidelines on how organizations can realize high growth. The conceptual model will be based on Social Capital theory and Absorptive Capacity theory, as existing research has shown that both social capital and absorptive capacity seem to play an important role in overcoming challenges during phases of growth. The initial conceptual model and corresponding propositions to be tested are presented in this paper. The proposed research methodology, a mixed method approach consisting of an extended literature review combined with a multiple case study, is provided as well.