Hand on Heart is a time-lapse documentary that follows the transformation of Irina Klochko, an established TV director, into a soldier in the Ukrainian army who, after the outbreak of the conflict, decided to leave her comfortable life and set out to defend her homeland, considering it a moral duty. Her journey is intertwined with associated stories. The story of Bohdan, a Ukrainian army volunteer, the story of Katarína, a Slovak volunteer who tirelessly drives humanitarian aid to „ground zero“, and the story of another volunteer, Igor, a businessman who is now a frontline medic.

The film depicts heroism, sacrifice, and identity crisis in the context of war, creating a complex view of the realities of war. Through intimate and personal stories, director Viera Dubačová creates a story circle where individual characters in existentially exacerbated situations form a chain of relationships. This human chain is crucial for the functioning of the mechanisms of a defending country, which is entirely dependent on the willingness and determination of its ordinary citizens. Despite the impasse and desperate situations, each character contributes to the overall picture of the struggle for survival and existence.