Picard and the crew must battle their trepidation of the future in order to solve the surprise arrival of their own #5 shuttle and a facsimile incoherent Picard. Most of the scenes set out to build up tension and worrying for what it all means as the Enterprise is on a collision course with a seemingly unalterable series of events. When the time comes for the finale you will probably be caught up worrying as much as the Ryker et al. Which is what youre supposed to do. Though the locations are set mostly on board the Enterprise, the story is strong enough to propel you through and keep you interested in the climax of this show. The alien vortex is very good effects compared to Series 1. While the best part of the plot is the finale as the fully aware duplicate Picard and the "real" Picard as they look to be on a collision course to repeat and stay in the loop.
Thankfully, though Picard does what can only be described as something unthinkable in order to change the future and save the day.