A timeless poetic story drawing on mythology, fairy tales and, above all, imagination, it speaks of growing up, the power of emotions, freedom and the courage to follow one's dreams.

Have you heard about the river Kjar? The one that flows in reverse, and whose water prevents it from dying?

When twelve-year-old Hana walks into Tomek's shop and asks for her, the young shopkeeper is taken aback. He, who until now has been convinced that he has everything he needs on offer, finds that he cannot fulfil the mysterious girl's wish. So he sets out on her trail, driven by the power of love and the desire for adventure. An incredible journey awaits them both, full of unexpected encounters, fascinating discoveries and tests of courage.