A story of love, sex, time travel and death, and a reality that just won't settle down. It's not that far in the future, and time travel is a commercial enterprise. Marine Major Mark Multon and his wife, Beth, decide to exploit this new capability and double up on his six-week furlough. Just before it's time to re-deploy they head back six weeks, meet themselves for dinner and drinks, then start a vacation covering half the continents of the globe on 'borrowed' time. But the un-time travelled version of Mark and Beth discover something about their future trip. Or think they do. Or maybe they...