In that short period between puberty and adolescence, Ale witnesses, along with her best friend Rubén, an equally brief phenomenon: Velvet's comet sighting through Mexico City's impressive buildings. This celestial body's filming captures a glimpse of the fragility in Ale and Rubén's friendship, making their encounters increasingly occasional and their reencounters much stranger, forcing the main character to face her own reality, with or without a screen in between.