A few weeks after palliative nurse Hans spends New year's eve completely with new acquaintance Simone, she finds herself pregnant, unplanned. At another surprise meeting, handsome Hannes surprises her by reacting to the news by offering her to move into his fine home. While Hannes devotes himself further to terminal hospital patients, Simone lazily renovates the house, but somehow gets jealous of the neighbors and compromises everything.

One day in Europe shows stories set in four European countries. All of them involve thievery in some way or the other. The protagonists are strangers in the respective country. For none of them their stay turns out as planned.