is one piece episode 1 filler?

Luffy is cast at sea in a barrel. Sailors on a passing cruise ship retrieve the barrel, but the ship is attacked with cannon fire by a nearby pirate ship, led by Alvida.

The barrel is sent rolling into the kitchen. Once the cruise ship's sails have been destroyed, the Alvida Pirates board the ship to plunder its goods, and Alvida also forces one of her chore boys, Koby, to board the ship.

Meanwhile, a girl takes advantage of the opportunity and sneaks aboard the Alvida Pirates' ship to steal its treasures.