What if you had the chance to travel back in time and change just one event in your life? What would it be? For John Sullivan, there is no question. He would undo the events of October 12, 1969, when the out-of-control Bruxton fire took the life of his father, Frank, a heroic firefighter. Now John may get exactly what he wished for – and much more – when John saves his father but causes another tragedy that father and son must race against time to undo.