He is a book character. She is a refugee. They are the "errors".

As war's turmoil forces her onto an evacuation train, Alisa, a young artist, unwittingly embarks on a surreal journey through the caverns of her own tormented mind. Guided by Ukrainian historical figures camouflaged as passengers, and charmed by the charismatic Grygorij, Alisa grapples with love and identity, trying to break free from the train metaphor and protect her memory.

Despite the carnival-like atmosphere, the story explores the profound impact of trauma, the struggle to preserve identity, and the ultimate triumph of choosing to remember amidst the chaos of war and societal upheaval.