In Clone Wars Season 4, episodes 15-18, there is a whole plot about Count Dooku selecting bounty hunters for a mission to kidnap Palpatine from Naboo's Festival of Light. One of the bounty hunters is Obi-Wan Kenobi working under disguise, and in the end he foils Count's plan with the help of other Jedi .
Dooku did explain to his accomplices that he wants to blackmail Republic with Chancellor as his captive. But, as we all know, both Dooku and Palpatine are Sith. Therefore, they must have an ulterior motive for this complex operation, but this is never shown in cartoon. What could it be ?