Mañanitas tells the story of Santiago, a 12-year-old boy who is naively attracted to the naked body of Ángela, his older cousin. This timid sexual awakening continues with a confusing encounter with another person.

Sara is drawing at home. When her father arrives from work, they start playing, unaware that their peaceful family environment will soon be plunged into a situation in which a game and Sara's innocence will be of vital importance.