Santiago, Chile, 1986. Luchito, a 13-year-old boy, masturbates while he obsessively contemplates Manuel, his 16-year-old neighbor, whom he can see standing by a window in an adjacent project building. Oblivious of the gaze of his precocious voyeur, Manuel discovers his sexuality with a girl from the neighborhood. The window turns into an erotic cinematographic world that awakens a curiosity in Luchito, with disastrous repercussions for Manuel.