Charles Lattimer is an ordinary person facing middle age and nearing the end of his marriage. During a regular train trip (when the train was passing through a tunnel), he accidentally discovered an antique watch and learned that it could allow him to get off during a time slide. As a result, he found himself transported back to the 1890s. Soon, he found new love and goals there. But when he first returned to the past, the situation became complicated - soon after, his clock broke, causing him to make decisions that could trap him outside of his own time.