The certain pirate is the captain of the Moody beavers. 
A marine officer payed the captain of the Moody beavers to get the devil fruit to him from the shipwreck. This marine officer is know as the ''Employer'' Its sort of a code name.
He is a corrupt man and has a love for manipulations and gossips.
The crew of the Moody beavers arrive on the island and start trouble. The locals start resisting them.
We arrive just when the fights break out and we get attacked by both locals and the pirate crew.

better?