This is where the road starts to actually get rough. Okay, Balrog and Uruk-hai were already pretty bad, but just wait for the arduous trek across Emyn Muil and the Dead Marsh and you'll be wishing you were back in Moria, playing footsies with the Watcher in the Water.
The ending of The Fellowship of the Ring is the ending of the fellowship itself. Galadriel seems to have convinced Frodo to go it alone… although Sam comes along for the ride (and lucky that he does). Aragorn, Legolas, and Gimli, go to hunt for Merry and Pippin who are being transported by to Saruman on orcback.
Now we're all set up for our split storylines within the two movies to come.