Video summary is: "River is kidnapped and Jayne wants to get her back but everyone says it's too dangerous. He misses her and remembers all of the times they had together. During this time River is being experimented on, and wants only to get back to Jayne. Eventually, the crew attempt to rescue River, led by Jayne."
I love the video, and would give just about anything to read a fic that was based upon it!