In this ethnographic study, I explore the ways, in which the engagement of Polish Catholics with Swedish society generates both adaptation and resistance. The thesis begins with an overview of the history of the Swedish Catholic Church and notes how Poles became one of the most numerous immigrant groups in Sweden during past decades. I then make use of fifteen in-depth interviews along with more than twenty sessions of observation in a Polish milieu in the Mälaren Valley. Polish Catholics often consider themselves, as one put it, as "weird creatures" in Sweden, not only for being a religious minority, but also due to conflicts between Catholic moral teachings and prevailing modern liberal views in Swedish society. Also, interviewees tend to blame Sweden for weakening the religiosity of their compatriots. Catholicism often presents particular challenges for the adaptation and integration of Poles, especially teenagers, who are, as one out it, seen "like freaks here". Also notable is the controversial stance of parishioners and the clergy on gender questions. While many laity see feminism as a threat, some priests assert that "feminism and Catholicism have so much in common". Among other challenges for the religious life of Poles in Sweden are consumerism, which leads to the formulation "prosperity destroys people" and is seen as a competitor to the church; and the Swedish language, which divides first and second generations. Interviewees also express shared interests with Muslims and solidarity with Orthodox Christians.