Fist Fight! Two Vice Admirals Fight

Smoker and Vergo begin their fight in the SAD Room. At the same time, Sanji, Tashigi, and the G-5 Marines are running through the battle torn B-block when a gas tank explodes, causing Shinokuni to be let in. Caesar Clown, sitting on the second floor of R-block with his subordinates in Vegapunk's old room, instructs that the doors to C and D-blocks be closed, driving everyone to the first floor of R-block where a trap is ready to expose them to Shinokuni. When one of Caesar's subordinates questions the nature of the gas, Caesar then makes a speech to his subordinates, saying that the poisonous gas bomb four years ago was Vegapunk's doing and that Caesar tried to stop him. However, in a flashback it is revealed that Caesar constructed the weapon himself, and when he was told to stop and banished from the science squad, he set it off. While the gates to C and D-blocks are closed, Luffy meets a small dragon who can talk.

The Small Dragon! Momonosuke Appears

Luffy meets Momonosuke in the garbage dump of Block C. In a flashback, Momonosuke didn't want the candy Caesar gave out to the children and he got hungry so he ate a devil fruit which turned him into a dragon. Luffy and Momonosuke take off. Kinemon, Usopp and Brook look for sea stone handcuffs. Smoker continues his fight with Vergo. Nami, Robin, Zoro and Chopper are going after the children. Robin gets stabbed by Monet in the arm and Zoro defends the Straw Hats against Monet.

Deadly Combat in Snowstorm The Straw Hats vs. the Snow Woman

Mocha runs off with the candy and she thinks back in a flashback. Mocha and Sind are on a ship to escape from the poison gas. Mocha wants to go back home to her family, cries, and Sind tries to calm her down but he cries too. Caesar Clown finds them later and tells them that his own son died from the gas and he hoped to not see anymore children die from the poison gas. Mocha is still getting chased by the children who are drugged by the candy and she is making sure they don't get their hands on the candy. Monet introduced new children to the other children in a flashback. Zoro is fighting against Monet while Nami, Robin and Chopper are going after Mocha and the children. She uses her devil fruit powers to reach the three and Zoro blocks her attack from hitting Nami. Monet hopes to finish off the weaker Straw Hats because it is a strategic tactic. Monet blocks the entrance with a snow wall and is about to bite Nami on the arm until Robin prevents that from happening. Zoro opens up a pathway out of the room so that Nami, Robin and Chopper to get away from Monet. Luffy and Momonosuke is still getting out of the garbage chute until Momonosuke stopped and they both fell back down the chute. Caesar Clown is watching Monet fighting Zoro and the children chasing after Mocha. He talks about Shinokuni getting inside the facility being an important use. He says that they'll be killed soon. Usopp, Kinemon and Brook are getting chased by the poison gas and are trying to find the sea stone cuffs and Momonosuke. Monet asks Zoro why he is only blocking her attacks instead of attacking her. Sanji and the G-5 Marines arrived and Sanji sees Zoro and makes fun of him and the marines do the same. Sanji and the marines see Monet and are admired by her beauty. Monet uses her devil fruit powers and bites off a shoulder of a few marines causing them to panic. Sanji and the marines run off while Tashigi stays with Zoro to fend off Monet.

Showing Off His Techniques! Zoro's Formidable One-Sword Style!

Mocha is still running away with the candy, and the kids are chasing her. Chopper, Nami, and Robin come to her and the children's aid. Then, G-5 and Sanji goes in their direction. At the Biscuit Room, Zoro and Tashigi battle Monet, with Monet almost breaking Tashigi's shoulder with her snow powers, but Zoro comes in and vertically splits Monet in half with a powerful One Sword Style technique. At the bottom of the C building, Luffy barely manages to hold onto a small ladge and begins to climb out, carrying an unconscious Momonosuke up the chute.

I'll Protect My Friends! Mocha's Desperate Escape

Mocha is running away with the candy so the children won't be able to get their hands on it and eat it. Chopper, Robin and Nami attempt to stop the children, but they eventually catch up to Mocha. She then eats all of the candy so that the other children won't be able to. Mocha wants to sacrifice herself for her friends. Zoro and Tashigi run away from the poison gas and are meeting up with the rest of the group. Chopper flashes back to when he and Mocha were discussing why the candy was bad to eat, while attempting to bar the door against the enraged children.
Luffy and Momonosuke manage to escape from the garbage chute. At the top, they are attacked by some of Caesar's sheep-men, but Luffy easily dispatches them using his Haoshoku Haki. Luffy leaves one of Caesar's men conscious, so that he can ask him where Caesar is.