is one piece episode 124 filler?

Vivi and Usopp are together and Vivi has an idea of where the cannon is hidden. Usopp had signaled the other member of The Straw Hat Pirates (in the previous episode) with one of his sling shot bombs.

But Billions from the Baroque Works had found them instead. To distract them, Usopp uses a chalkboard and drags his nails down it to make a loud noise; he grabs Vivi and runs away.

Meanwhile, Luffy finds where Crocodile, Nefertari Cobra, and the critically injured Nico Robin is. Crocodile is upset that Luffy is still alive, no matter how many times he defeats Luffy.