Break Through the Enemy Lines! Luffy and Zoro's Counterattack!

Sabo and Koala separate from Nico Robin's group and head in separate directions as Robin decides to move toward the palace. As Trafalgar D. Water Law and Monkey D. Luffy argue over what to do next, Koala investigates the underground trading port and the Marines attempt to restrain the people being controlled by Parasite.
Donquixote Doflamingo meets with his top 3 executives, where he reveals that the Marines will not hinder them in their activities for now. Luffy, Roronoa Zoro, and Law land near several Marines and Donquixote underlings, but they are confronted by Issho.