Un gardien de nuit, passionné d'astronomie, profite de ses temps libres pour monter à l'observatoire juché sur le toit de l'immeuble où il travaille. Un jour, sa routine est troublée par une querelle avec sa compagne venue lui annoncer qu'elle est enceinte puis, par un étudiant en train d'enregistrer sur vidéo un message aux allures de testament. ----------------Peter, a night watchman in a downtown college, loves his job because it allows him to indulge his favourite pastime, star gazing. An amateur astronomer, Peter spends every spare minute taking advantage of the rooftop observatory. One night, while making his obligatory rounds, Peter encounters a young student, Nathael, working late in the audio-visual room. Nathael claims to be finishing up a school project, and convinces Peter to let him stay. In reality, Nathael is videotaping a suicide note. As Peter continues on his rounds, his girlfriend Helen unexpectedly appears. Visibly upset, she announces that she is pregnant, and a fierce argument ensues. . . 'Le Cri de la nuit' is a sensitive drama about chance encounters -- and how total strangers can give each other new purpose and direction.