Research methodology In writing this case, the authors collected both primary and secondary data. Primary data were collected through personal observation and semi-structured interviews with Konstantinos Papageorgiou Jr, Papageorgiou Transports & Logistics’s (PTL) CEO. In 2014, Konstantinos Jr participated in an entrepreneurship course for executives instructed by the first author at the National and Kapodistrian University of Athens. Since then, the first author has served as an advisor to PTL’s CEO. Furthermore, Konstantinos Papageorgiou Jr presented his case during an undergraduate management course at the Department of Business Administration at the National and Kapodistrian University of Athens in November 2020. Finally, three semi-structured interviews with the CEO were conducted from December 2020 until March 2021. Secondary data were collected from the company’s website and social media, as well as databases and annual reports. Since the academic year 2021/2022, the authors have each independently taught the case study in various courses, including strategic management (undergraduate and postgraduate), entrepreneurship (undergraduate) and innovation management (undergraduate and postgraduate). Testing the case in class has shaped the instructor’s manual. Case overview/synopsis The case study of PTL highlights a remarkable transformation in response to a critical business challenge. Facing the abrupt loss of their main client in 2010, PTL, led by Konstantinos Papageorgiou Jr, swiftly recovered and sought to proactively mitigate future shocks. Operating amid the Greek economic crisis, Konstantinos Jr recognized an opportunity in the niche market of juvenile Mediterranean fish (fry) transport. Despite lacking prior expertise in this field, PTL engaged in open innovation, collaborating with a variety of partners to acquire the necessary knowledge and capabilities. By 2013, PTL had successfully entered the niche market of fry transportation. Over the subsequent years, this venture grew, and by the end of 2022, PTL operated four trucks dedicated to this niche market. The company’s remarkable transformation exemplifies how a small and medium-sized enterprise (SME) can adapt, innovate, and diversify its offerings beyond its comfort zone, ultimately achieving a tenfold increase in turnover. PTL’s journey showcases the strategic value of partnerships and the potential for SMEs to evolve into “innovation producers” in the face of adversity. Complexity academic level The PTL case is suitable for management, strategic management, innovation management and entrepreneurship courses. The case is recommended for use at both undergraduate and postgraduate levels (a different teaching plan is proposed for each level). It provides both undergraduate and master’s students studying business administration the opportunity to explore issues associated with the management of SMEs, the formulation and implementation of a business strategy and the management of innovation in SMEs.