This opera is about water cycle indispensable for human life on Earth. The opera’s setting is concomitantly built upon infantile visual imagery through real and digital images. The drawings, the videos, hand in hand with movements/choreography of the choir contribute to the perception and fruition both of the music and the story. The music, sung by children, joins spoken and singing voices, real-time sound transformations of voice as well as nature and electronic sounds diffused in space.