Rose Loomis along with her elderly, gloomier husband, George, are traveling at a cottage in Niagara Falls, N.Y.. The bunch befriend Polly and Ray Cutler, that are currently honeymooning in the region. Polly begins to suspect that something is amiss between Rose and George, when she sees Rose in the arms of another man, along with her suspicions grow. While Ray believes Polly is overreacting, things between George and Rose take a dark turn.