While study-abroad students generally prefer destinations where the local language relates to their personal, academic, or professional pursuits, the Czech Republic ranks as the 25th most popular destination for U.S. study abroad, signalling an interest in exploring beyond traditional language choices. This study addresses the gap in the literature on learning a less commonly taught language in the study abroad setting, which is unrelated to the student's major fields of study (Czech). Over thirteen weeks, data were gathered through a qualitative methodology involving initial questionnaires, learner diaries, and semi-structured interviews with a sample of five students. Drawing on the L2 Motivational Self System (L2MSS), the research underscores the impact of the L2 learning experience and the construct of the ideal L2 self on motivation. Findings revealed a general increase in motivation for learning Czech throughout the semester, accompanied by a decline in the ideal Czech self by the end and an indicative enhancement in the ideal multilingual self-concept. This study additionally emphasizes the vital role of mandatory language courses in augmenting motivation, particularly when aligned with learners' objectives. These insights broaden the understanding of motivational dynamics in acquiring languages other than English (LOTEs), highlighting the necessity for continued exploration of the multilingual motivational self-system within study-abroad contexts.