Chance Encounters is the story of Kevin and Shelley Pett; two people who share everything in life. Over the years, these high school sweethearts built their lives and their careers; marriage, a house, four children and spotless records as Toronto subway drivers. When someone jumps in front of Kevin's train, it sends their world into turmoil. Then, just as their lives are returning to normal, destiny takes the couple down the same path once again.