Docudrama sobre la vida de Santa Faustina Kowalska, cuyas visiones de Jesucristo inspiraron la devoción católica a la Divina Misericordia y le valieron el título de "Apóstol de la Divina Misericordia".
19-year-old Janka comes from a catholic family. She lives together with her parents in a small town near the eastern border of Poland. One day she meets an eccentric Russian woman–Sara. The feeling that is awoken as a result of the encounter becomes for Janka both the beginning of sequence of trials and reflections upon her own life. The film corresponds to the Ninth Commandment: “You shall not covet your neighbor’s wife".
Enfrentándose a un futuro incierto, Witek, un joven polaco estudiante de medicina, decide interrumpir temporalmente sus estudios y coger un tren e ir a Varsovia.
