A young, idealist American gets a job as a train conductor for the Zentropa railway network in postwar, US-occupied Frankfurt. As various people try to take advantage of him, he soon finds his position politically sensitive, and gets caught up in a whirlpool of conspiracies and Nazi sympathisers.
Krzysztof, a semantics professor and computer hobbyist, is raising his young son, Paweł, to look to science for answers, while Irena, Paweł’s aunt, lives a life rooted in faith. Over the course of one day, both adults are forced to question their belief systems.
Dorota Geller, a married woman, faces a dilemma involving her sick husband's prognosis. Her husband's doctor, who believes in God, sweared about it in vain.
