Whazzat? Nami together with the Arlong Pirates? Really?
Luffy & Co meet a sea cow.
The sea cow is friggin gigantic.
It seems to be interested in food.
So Sanji offers it a taste.
Sanji changes his mind.
Meanwhile, back at the island Usopp just managed to escape from a merman and is sitting in a house drinking tea together with a blue haired stranger. A little kid is also present, one that tried to kill Usopp thinking he was a merman (because he had such a strange nose), he speaks about Arlong's terror, how he governs the whole island with fear and recently wiped out an entire village because they couldn't pay up (insanely high taxes). Nojiko (the blue haired stranger, no longer strange, err) tells the kid to go home, so he does.
It turns out Nojiko is Nami's sister.
Don't believe it? Here's proof.
Back at Arlong's place Zoro has been captured. Nami tells him to get lost and Zoro pushes himself backwards into the pool, legs and arms tied. Nami jumps in to save him, though obviously she doesn't use that word, she tells Arlong that she will "deal with him later".
Luffy & Co are on their way!