The basic story of the RP is based on one of my character's experiences while in the Morag Tong who I have in SoS. Without getting into specifics because of him the Cheydinhal DB Sanctuary was destroyed along with many of the members in it being killed. Serosi now journeys toward Leyawiin possibly to get a ship that takes him back to Morrowind. You can RP a Darkbrotherhood member that was part of the Cheydinhal Sanctuary but was not present when it was destroyed, or a DB member we pick up along the way. As a Morag Tong you could be someone we pick up along the way or that is tailing Serosi.
Basically the RP will move in two large groups. One DB the other MT all the while setting up ambushes, or ways to kill members of the other group. It would be done in "PvP" style and I will be managing it. I think i'm pretty good as managing "PvP" as i've done it for quite a while now. Expect characters to die but because of the way the RP moves along (from Cheydinhal, to the Imperial City maybe, then Bravil, Leyawiin and so on and so forth) we can always pick up new members and new people can join in very easily.
I really want to tap into that assassin feel, a dark paranoia, that tense moment before the action. The focus would be adventure, character development and fighting.