Love on the Grandline

"Zoro!" Monkey D. Luffy screamed angrily as the naval ship sailed on with Zoro in its clutches.
"Luffy, no!" Ussop held him back, "There's nothing we can do."
"Yes, we can!" Luffy shouted, "We can get them, we can get Zoro back!" he shouted back.
"Luffy..." Nami began, "We'll go after him, but right now we have no plan..."
"She's right..." Robin agreed, "The navy may have Zoro, but we don't have a plan and we don't know where they're taking him... why was he taken and not us... think!" she scolded. Luffy stood a moment, unsure of just what was going on. At last, he calmed down... worried about his comrade.
"There must be some reason why only Zoro was taken..." Nami stated, thinking hard, "I mean, did the Navy think that the only way to defeat us was to capture us one by one?"
"What ever it is, we need to get Luffy inside before he goes out of control and does something stupid..." Robin sighed.
"What's all the commotion?" Sanji asked, coming up from below deck, looking tired.
"Sanji!" Ussop raced forward, "Zoro's been kidnapped by the Navy!"
"W-what?" he exclaimed, "How? Zoro could have taken any Naval ship easily! Guess this proves I'm stronger..."
"Sanji! This is no time to joke, cook some meat for Luffy..." Ussop shouted.
"Sure," Sanji frowned, "But what's wrong with him?"