The film shows that in the case of this work, the very process of project implementation was as important as its result. The Oxygenator had the form of a social sculpture realized in the urban space of Warsaw in 2007. It was an artificial reservoir in the form of a 150 m² water hole, 1 meter deep, built on Plac Grzybowski, almost in the city center. Local residents called him a "lake" and received a much friendlier than Rajkowska's earlier object "grafted" in the urban tissue, i.e. Greetings from Aleje Jerozolimskie (2002) - the famous palm tree on de Gaulle Roundabout.
Oxygenator very quickly became an excuse to create new social rituals, a clear form of communication for the local community. He was to create a place that made being more comfortable together in a space marked by unprocessed trauma related to the ghetto tragedy, which was also located in this area.