Someone posted both parts of the video online. There's a few still images, lots of text, and a bit of spoken dialogue. In the end, you can see Saber waiting in a field, you hear Shirou say "I'm home, Saber." and she replies, "Welcome back, Shirou."
Translated text here: http://www.fatestaynight.org/forum/viewtopic.php?t=384
Then a still shot from very far away with what looks like two figures standing together (One would assume it's Shirou and Saber). They never explain how Shirou made his way to Saber, and it's left up to the viewer to determine if it really happened or not. It's has a very "Shirou wished to see Saber so much, and Saber wished Shirou would come to her so much that they did the impossible" feel to it.