Maria,10, was born and raised at a small circus. She's suddenly forced to live at the city with a rich grandmother that she barely knows. Loneliness and grief strike her, while she struggles to overcome a momentary memory lapse. She crosses on an imaginary tightrope towards a facing dark window where she'll reach her deepest memories behind the colorful doors of a mysterious corridor, gathering the strength to face again a tragic moment of her life, and finally being able to move forwards.