In 1919, the Ugandan chief Semei Kakungulu circumcised himself and his family and declared them to be Jewish, hence founding the Abayudaya, the Ugandan Jewish community centred around Mbale, in Eastern Uganda. The community still exists and is one of a handful of African Jewish communities that are not Jewish through a hereditary connection to Israel, but through choosing to adopt a Jewish practice and belief system. Whilst in the 1920s the community followed a kind of syncretic form of Judaism, mixing the Old and New Testament together with elements from pre-Christian belief, the practice soon became aligned with mainstream Jewish customs. Today the community of approximately 3000 has an ordained Rabbi who conducts services in the synagogue and leads Torah study sessions with a group of Rabbinical students.

Once upon a Time (2013) is a four channel video installation by Marcel Odenbach and Sam Hopkins which features interviews with four of these Rabbinical students. Whilst of course, each narrative is highly personal and very individual, there is a certain coherence that emerges across all four stories. On the one hand, there seems to be this quest for a belief system that makes sense in an almost pragmatic, everyday way, but on the other hand, there is this powerful feeling of the existential nature of religion and of the spiritual resonance that Judaism has for these individuals.

Sam Hopkins was featured as one of the leading global thinkers of 2014 by the influencial US Foreign Policy Magazine.