The Sith brothers and their criminal allies attack Mandalore and the Death Watch pretends to defeat them, causing the gullible people to choose Pre Vizla's rule over Duchess Satine's.
Did You Know?
The 'Jedi fortune cookie' message that opens the show reads "Alliances can stall true intentions." See more
Like you said, only the strongest shall rule.
The Director's Cut includes a scene of Vizsla's severed head rolling down the stairs. See more