In the near future, humanity faces a global energy crisis that threatens to plunge the world into perpetual darkness. Young engineer Yuna, a brilliant mind at just twenty-five, is working on a revolutionary project to create a sustainable energy source from solar fusion. As political chaos erupts around her, Yuna finds herself caught between her ambition and her love for Haruto, an activist fighting to preserve the world's natural beauty at all costs.
When a powerful conglomerate tries to seize her research to turn it into a weapon, Yuna and Haruto are forced to join forces in a race against time. Together, they traverse a desolate landscape marked by pollution and social unrest, journeying through ruined cities and forgotten towns. Along their odyssey, they encounter other characters affected by the energy crisis, each with their own stories of struggle and hope.
As the precipice of destruction and despair looms closer, Yuna must decide whether to risk everything for her vision of a bright future or to take the easy path offered by the corporation. Amid the constant struggle between unchecked greed and a genuine desire for change, the fragility of the balance between the individual and society is revealed. The film not only explores survival but also the power of love and hope in dark times.