Summary:
Robin is caught by the Orochi Oniwabanshu in Orochi’s castle. The ninjas attack Robin to find out the truth about her intentions, but with the help of their devil fruit, they manage to escape. Meanwhile, Chopper, Kiku, Tama, and Momonosuke find Big Mom, who drifts ashore after meeting King. Chopper and the others then discover that Big Mom has lost her memories.
Most of Big Mom’s pirates survive the King’s attack unscathed, but are separated from Big Mom, who sinks to the bottom of the sea. Meanwhile, Komurasaki finishes her song on her shamisen.
Robin is confronted by the Orochi Oniwabanshu, who offer her a quick and painless death if she tells them the truth. Robin tries to lie to get out, but the ninjas find out and attack her. Robin tries to escape, but one of the ninjas captures her with a rope hook. Another ninja attacks her with shurikens.
After being attacked, Robin disintegrates, revealing that he is simply a clone of her created by her Devil Fruit ability. The real Robin, who is outside, contacts Nami and Shinoba, who decide to go after Fukuroku. Robin is then forced to disconnect, keeping her geisha disguise and tending to a drunken partygoer. Brook decides to come out to protect Robin and separate his soul from his body. Meanwhile, the ninjas scatter, not wanting to disrupt Orochi’s party.
On the beaches of Kuri, Chopper trains with Tama while Momonosuke practices his swordsmanship. They express concerns about Raizo, who has infiltrated Udon Prison, but has yet to respond. Chopper then climbs a bamboo stalk and notices a mysterious large object in the distance.
Robin returns to the party, attending to Orochi and pouring him a drink. She manages to get some plans from Orochi regarding the upcoming Fire Festival. Orochi reveals that there will be a lavish banquet and all the country’s top officials and the Beasts Pirates will be there. Meanwhile, Brook floats through the halls but is spotted by a ninja. Brook appears before them, who are startled, mistaking him for a ghost.
The ninjas then run through the mansion, searching all the rooms and piercing the ceiling, scaring Nami and Shinoba hiding in the attic. They also search the party area and Robin hides from the patrolling ninja.
Chopper and the others go to the object, and to their shock, discover that it is the unconscious body of Big Mom, who washed ashore after King’s attack. To their horror, he wakes up. However, she has lost all her memories and does not know who or where she is.
The anime adds the following:
A dream sequence in which Big Mom takes Luffy’s life.
Toko serves drinks while Komurasaki plays music.
Chopper and Tama play ninja before going to Kuri Beach.
Before returning to the banquet, Robin runs into a drunken man and takes his mask.
Brook runs to Fujino and Raijin is shown.
More scenes of Orochi Oniwabanshu looking for Robin.
Daikoku almost discovers Shinobu and Nami.
The following are expanded:
Robin’s encounter with the Orochi Oniwabanshu.
Robin’s conversation with Orochi.