Jim shot his head in front of Sherlock. And then Sherlock was seriously injured in the explosion. In a deep coma, Sherlock’s soul met Jim. Sherlock wants to accompany Jim through the last process, to the end.
During the journey, they untied the knot, they forgave each other, they regreted that they wasted so much time when they were alive. It was late. After the long long jouney, they could never meet each other again.
After the farewell, Sherlock waked up, back to his life. A long lonely life, without Jim Moriarty, forever.
BGM is the theme song of Hanhan’s movie “The Continent”. I think the lyrics is important for the story, so I post it here:)
When a ship sink to the bottom of the ocean，
when a person becomes a mystery，You don’t know why they leave，
His farewell is his last word。
When a car disappeared into horizon，when the past stands as a mystsry，You don’t know why they leave，
Just like you don’t know where the end is。
when every star falls from the Milky Way，
It’s time to say goodbye to myself，There is no need to know what has lost is lost forever