Two lives. One night sky. Roisin and Francois first meet in the snowy white expanse of Antarctica, searching for a comet overhead. While Roisin grew up in a tiny village in Ireland, ablaze with a passion for science and the skies, Francois was raised by his restless young mother, who dreamt of new worlds but was unable to turn her back on her past. As we loop back through their lives we see their paths cross as they come closer and closer to this moment, brought together by the infinite possibilities of the night sky.