Loose Thread: A young couple, on the verge of bringing their first child into the world, are at a loss to find the joy of it when terrifying news from the doctor, as well as unspoken secrets, begin to tear the relationship apart. Meanwhile, an older couple, having received an even graver medical prognosis, look back on their lives and wonder if there's still time to tie up loose ends. When the couples' paths entwine, nothing will ever be the same again.